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NITRO PAHs

CAS Name

776-34-1

1-Amino-4-nitronaphthalene

602-60-8

9-Nitroanthracene

20268-51-3

7-Nitrobenz[a]anthracene

63041-90-7

6-Nitrobenz[a]pyrene

86-00-0

2-Nitrobiphenyl

2113-58-8

3-Nitrobiphenyl

92-93-3

4-Nitrobiphenyl

7496-02-8

6-Nitrochrysene

5410-97-9

3-Nitrodibenzofuran

6639-36-7

2-Nitrodibenzothiophene

892-21-7

3-Nitrofluoranthene

86-57-7

1-Nitronaphthalene

581-89-5

2-Nitronaphthalene

17024-19-0

3-Nitrophenanthrene

82064-15-1

4-Nitrophenanthrene

954-46-1

9-Nitrophenanthrene

5522-43-0

1-Nitropyrene

33685-60-8

9,10-Dinitroanthracene

2436-96-6

2,2'-Dinitrobiphenyl

N/A

2,8-Dinitrodibenzothiophene

5405-53-8

2,7-Dinitrofluorene

31551-45-8

2,7-Dinitro-9-fluorenone

606-37-1

1,3-Dinitronaphthalene

605-71-0

1,5-Dinitronaphthalene

602-38-0

1,8-Dinitronaphthalene

75321-20-9

1,3-Dinitropyrene

42397-64-8

1,6-Dinitropyrene

42397-65-9

1,8-Dinitropyrene

129-79-3

2,4,7-Trinitro-9-fluorenone

98-95-3

Nitrobenzene

88-72-2

2-Nitrotoluene

121-14-2

2,4-Dinitrotoluene

606-20-2

2,6-Dinitrotoluene

51-28-5

2-Nitrophenol

100-02-7

4-Nitrophenol

51-28-5

2,4-Dinitrophenol

88-74-4

2-Nitroaniline

99-09-2

3-Nitroaniline

100-01-6

4-Nitroaniline

534-52-1

4,6-Dinitro- o-cresol (2-Methyl-4,6-dinitrophenol)

607-57-8

2-Nitrofluorene

 

 

53-96-3

2-Acetamidofluorene

610-49-1

1-Aminoanthracene

613-13-8

2-Aminoanthracene

82-45-1

1-Aminoanthraquinone

90-41-5

2-Aminobiphenyl

92-67-1

4-Aminobiphenyl

2642-98-0

6-Aminochrysene

153-78-6

2-Aminofluorene

134-32-7

1-Aminonaphthalene

91-59-8

2-Aminonaphthalene

525-64-4

2,7-Diaminofluorene

479-27-6

1,8-Diaminonaphthalene

122-66-7

1,2-Diphenylhydrazine

90-30-2

N-phenyl-1-naphthylamine

119-93-7

o-Tolidine (3,3'-Dimethylbenzidine)

 

Literature 1982-1999
------------------------------------------------------------------------
 Record 1 of 92 for NITRO AND PAH 

1042530
Title:Separation of nitro-polycyclic aromatic hydrocarbons by micellar
electrokinetic chromatography with photodiode-array detection.
Author:Jia, L. ; Yan, J. ; Gao, J. ; Chen, X. ; Hu, G. L. ; Wang, Y. R. ;
Xu, M. S. ; Wang, X. R.
Author Affiliation:Anal. Sci. Lab., Dept. Chem., Xiamen Univ., Xiamen
361005, China
Journal:Microchem. J.   Vol59   Iss3   Pg364-371
Publication Date:Jul 1998
CODEN:MICJAN   ISSN:0026-265X
Language:English
Document Type:Journal
Abstract:A study of the effects of organic modifiers, viz. methanol (MeOH),
acetonitrile (ACN) and dimethylformamide (DMF) and .beta.-cyclodextrin
(.beta.-CD) on the separation of 5 nitro-PAH (listed) by MEKC is presented.
Portions of a mixed standard solution of 0.491-2.65mM-nitro-PAH were
separated on a polyimide-coated capillary (64.5 cm x 150 .mu.m i.d.; 56 cm
to detector) operated at 20.degree.C with pressure injection (50 mbar, 3 s)
and an applied voltage of 20 kV. The carrier electrolytes contained
10mM-sodium dihydrogen phosphate, 20mM-Tris, 70mM-sodium deoxycholate and
10-50mM-.beta.-CD (or various concentrations of MeOH, ACN or DMF) adjusted
to pH 9.9 with concentrated NaOH. Results showed that DMF (10-20%) was the
most useful organic modifier for separating the nitro-PAH. ACN (30%) also
improved the separation of nitro-PAH except for 1-amino-and
2-nitronaphthalene.
Chemical Substance(s):nitro-compounds, polycyclic aromatic )
End of record 1
  ------------------------------------------------------------------------
 Record 2 of 92 for NITRO AND PAH                           Go to record 3

1042558
Title:Sorption tubes packed with polydimethylsiloxane: a new and promising
technique for the preconcentration of volatiles and semi-volatiles from air
and gaseous samples.
Author:Baltussen, E. ; David, F. ; Sandra, P. ; Janssen, H.-G. ; Cramers,
C. A.
Author Affiliation:Lab. Instrumental Anal., Eindhoven Univ. Technol., 5600
MB Eindhoven, Netherlands
Journal:J. High Resolut. Chromatogr.   Vol21   Iss6   Pg332-340
Publication Date:Jun 1998
CODEN:JHRCE7   ISSN:0935-6304
Language:English
Document Type:Journal
Abstract:A 325-mg cartridge of dimethylsilicone particles (0.24 to 0.4 mm
diameter, obtained by grinding Silastic silicone tubing) was used as SPE
adsorbent for volatile and semi-volatile organic analytes from air and
vapours. Results were compared with those obtained for 44 compounds
(listed) in seven test mixtures with use of four conventional solid
adsorbents. After adsorption, tubes were desorbed thermally at up to
200.degree.C (dimethylsilicone) or 250.degree.C (conventional adsorbents)
in a dual-injector thermodesorption system as online pre-column for GC-MS;
the GC column was temperature programmed from 40.degree.C (held for 3 min)
to 250.degree.C at 10.degree./min and mass-selective detection. Use of
dimethylsilicone has also been applied to determination of PAH and of
nitro-PAH in air. Tabulated results are presented and indicate that
dimethylsilicone performed much better than conventional adsorbents in many
instances. For headspace analysis of volatiles from cacao powder and hops,
sampling was for 10 min at 51 ml/min with N2 as carrier gas and specimen
chromatograms are presented.
Chemical Substance(s):carboxylic acids ); hydrocarbons, polycyclic aromatic
); nitro-compounds, polycyclic aromatic ); air, )
End of record 2
  ------------------------------------------------------------------------
 Record 3 of 92 for NITRO AND PAH                           Go to record 4

1039809
Title:High-performance liquid chromatography of nitrated polycyclic
aromatic hydrocarbons.
Author:Cvacka, J. ; Barek, J. ; Fogg, A. G. ; Moreira, J. C. ; Zima, J.
Author Affiliation:UNESCO Lab. Environ. Electrochem., Dept. Anal. Chem.,
Charles Univ., 128 43 Prague, Czech Republic
Journal:Analyst (Cambridge, U. K.)   Vol123   Iss2   Pg9R-18R
Publication Date:Feb 1998
CODEN:ANALAO   ISSN:0003-2654
Language:English
Document Type:Journal
Abstract:A review is presented of HPLC methods for the determination of
nitro-PAH. The aspects considered include, sample preparation,
chromatographic systems (stationary and mobile phases) and detection
techniques (spectrophotometry, fluorescence, electrochemical,
chemiluminescence, MS). Some examples of the application of HPLC to
nitro-PAH determination in various matrices, e.g., air, vehicle exhausts,
biological materials and food, are presented (90 references).
Chemical Substance(s):nitro-compounds, polycyclic aromatic )
End of record 3
  ------------------------------------------------------------------------
 Record 4 of 92 for NITRO AND PAH                           Go to record 5

1041062
Title:Fractionation of nitro-and hydroxy-polynuclear aromatic hydrocarbons
from extracts of air particulates by supercritical-fluid chromatography.
Author:Medvedovici, A. V. ; David, F. ; Desmet, G. ; Sandra, P.
Author Affiliation:Dept. Org. Chem., Univ. Gent, 9000 Ghent, Belgium
Journal:J. Microcolumn Sep.   Vol10   Iss1   Pg89-97
Publication Date:1998
CODEN:JMSEEJ   ISSN:1040-7685
Language:English
Document Type:Journal
Abstract:Airborne particulates were collected on a Whatman Quartz
Microfibre filter (20.3 x 25.4 cm) by sampling air at a flow rate of 1132
l/min for 24 h. Nitro-and hydroxy-PAH were extracted from the particulates
by Soxhlet extraction with CHCl3 for 16 h and then fractionated on a 5
.mu.m silica column (25 cm x 4.6 mm i.d.) at 50.degree.C, with CO2 as
mobile phase (pressure 200 bar, 2 ml/min flow rate) modified with
methanol/acetonitrile (1:1) [modifier programme from 1% (held for 5 min) to
2.5% at 0.15%/min, then to 27.5% at 5%/min]. Standard PAH were used to
calibrate the collection windows. Fractions were analysed by GC-MS on a
fused-silica column (30 m x 0.25 mm i.d.) coated with HP-5MS (0.25 .mu.m)
and operated with temperature programming from 50.degree.C (held for 1 min)
to 320.degree.C (held for 2 min) at 10.degree.C/min, with He as carrier gas
(1 ml/min) and MS detection. For selected solutes, concentrations down to 1
pg/m3 could be measured.
Chemical Substance(s):hydrocarbons, polycyclic aromatic ); airborne
particulates, )
End of record 4
  ------------------------------------------------------------------------
 Record 5 of 92 for NITRO AND PAH                           Go to record 6

4003726
Title:Deadly diesel: new potential carcinogen discovered in Japan.
Journal:Chemistry in Britain   Vol33   Iss12   Pg10
Publication Date:Dec 1997
CODEN:CHMBAY   ISSN:0009-3106
Language:English
Document Type:Journal; word count 200-899
Abstract:Researchers in Japan have discovered what they suspect may be one
of the most potent carcinogens ever identified. The company,
3-nitrobenzanthrone, is found in diesel exhaust fumes. The new compound is
described as a new class of powerful direct mutagen that can induce
considerable structural and/or numerical chromosomal aberrations in
mammalian cells. The compound is a nitrated polycyclic aromatic hydrocarbon
(nitro-PAH). While the concentration of 3-nitrobenzanthrone in diesel
exhaust particles was small, the researchers reported that it would
contribute considerably to the total mutagenic activity of diesel exhaust
extracts.
Chemical Substance(s):carcinogens
End of record 5
  ------------------------------------------------------------------------
 Record 6 of 92 for NITRO AND PAH                           Go to record 7

1040764
Title:Nitroarene concentrations and direct-acting mutagenicity of diesel
exhaust particulates fractionated by silica-gel column chromatography.
Author:Hayakawa, K. ; Nakamura, A. ; Terai, N. ; Kizu, R. ; Ando, K.
Author Affiliation:Fac. Pharm. Sci., Kanazawa Univ., Kanazawa 920, Japan
Journal:Chem. Pharm. Bull.   Vol45   Iss11   Pg1820-1822
Publication Date:Nov 1997
CODEN:CPBTAL   ISSN:0009-2363
Language:English
Document Type:Journal
Abstract:Diesel exhaust particulates (DEP) were collected at 30 l/min on a
Millipore AP 20 glass-fibre filter positioned 30 cm from the end of the
exhaust pipe of an idling diesel car engine. The filters were changed every
15 min, dried in a desiccator for 2 days and the collected particulates
were extracted with 2 x 50 ml benzene/ethanol (3:1). The extracts were
combined, filtered and the filtrate was evaporated to dryness. The residue
was dissolved in 500 .mu.l n-hexane and applied to a Wakogel Q200 silica
gel column (12 cm x 20 mm i.d.). The column was eluted successively with
n-hexane (40 + 200 ml), n-hexane/CH2Cl2 (3:1, 200 ml) CH2Cl2 (200 ml) and
methanol (450 ml). The five fractions were evaporated to dryness and the
residues were dissolved in 4 ml acetonitrile. Portions (20 .mu.l) of each
reconstituted fraction solution were analysed by HPLC on two Nacalai Tesque
Cosmosil 5C18MS columns (25 cm x 4.6 mm i.d.) connected in series with
acetonitrile/imidazole-HClO4 pH 7.6 (1:1) as mobile phase (1 ml/min) and
chemiluminescence detection (details given). Results (listed) showed that
nitro-PAH were mainly concentrated in the CH2Cl2-only extract and they
contributed 53.1% to the mutagenic activity of the extract. The
concentration levels of 1-nitropyrene, 1,3-, 1,6-and 1,8-dinitropyrenes
were greater than the other nitro-PAH.
Chemical Substance(s):nitro-compounds, polycyclic aromatic ); exhaust
gases, diesel-engine, )
End of record 6
  ------------------------------------------------------------------------
 Record 7 of 92 for NITRO AND PAH                           Go to record 8

1038767
Title:Evidence for the adsorption of nitrated polycyclic aromatic
hydrocarbons by tree bark.
Author:Douce, D. S. ; Clench, M. R. ; Cooke, M. ; Wang, J. D.
Author Affiliation:Div. Chem./Environ. Res. Centre, School Sci., Sheffield
Hallam Univ., Sheffield S1 1WB, UK
Journal:J. Chromatogr., A   Vol786   Iss2   Pg275-283
Publication Date:31 Oct 1997
CODEN:JCRAEY   ISSN:0021-9673
Language:English
Document Type:Journal
Abstract:Bark was extracted with CH2Cl2 (80 ml) for 96 h, fractionated by
SPE on a polypropylene cartridge containing amino-bonded phase (200 mg
absorbent) and alumina (500 ng absorbent) in series. Each solvent (15 ml)
was passed through the cartridge in reverse order (polar to non-polar) and
the bark extract was added to the column with the least polar solvent
(hexane) then eluted by hexane, cyclohexane, 20% CH2Cl2 in cyclohexane,
CH2Cl2, acetonitrile and methanol. The fractions were reduced to 500 .mu.l,
reduced to dryness, internal standard (8-nitroquinaldine) was added and the
solution reconstituted with CH2Cl2 before analysis by GC-ECD and GC
-negative-ion (NI) CIMS with selected-ion monitoring. For GC-ECD the
extract was injected onto a fused-silica column (20 m x 0.32 mm i.d.)
coated with Rtx-5 (0.25 .mu.m) and operated with temperature programming
from 40.degree.C (held for 4 min) to 145.degree.C (held for 1 min) at
25.degree.C/min, to 280.degree.C (held for 15 min) at 5.degree.C/min, N2 as
carrier gas (1 ml/min) and 63Ni ECD. For GC-NI CIMS a 30 m or 60 m column
was used (other conditions as before) with He carrier gas (1 ml/min). The
nitro-PAH were detected in the 20% CH2Cl2 fraction with recoveries from 28%
(1-nitronapthalene) to 108% (1-nitropyrene) and RSD of 1.92% and 10.2%,
respectively. A comparison was made with nitro-PAH in diesel particulate
extracts.
Chemical Substance(s):nitro-compounds, polycyclic aromatic ); bark, )
End of record 7
  ------------------------------------------------------------------------
 Record 8 of 92 for NITRO AND PAH                           Go to record 9

1038994
Title:A study on the analysis of polycyclic aromatic hydrocarbons by
reversed-phase LC with diode-array detection. I.
Author:Lee, W. ; Hong, J.-E. ; Park, S.-J. ; Pyo, H. S.
Author Affiliation:Res. Inst. Basic Sci. and Dept. Chem., Kyunghee Univ.,
Seoul 130-701, South Korea
Journal:Anal. Sci. Technol.   Vol10   Iss5   Pg315-324
Publication Date:25 Oct 1997
CODEN:ASCTET   ISSN:1225-0163
Language:Korean
Document Type:Journal
Abstract:The retention behaviour of 16 PAH and four nitro-PAH was
investigated on a 5 .mu.m ODS Hypersil column (10 cm x 4.6 mm i.d.) at
40.degree.C with gradient elution (1 ml/min) using aqueous methanol or
aqueous acetonitrile (details given) and diode-array detection from 210-400
nm. Solutes with greater aqueous solubilities, length to breadth ratios and
numbers of interfering hydrogen atom pairs had greater retention times.
Detection limits of PAH were 100-500 ng/ml.
Chemical Substance(s):nitro-compounds, polycyclic aromatic, );
hydrocarbons, polycyclic aromatic, )
End of record 8
  ------------------------------------------------------------------------
 Record 9 of 92 for NITRO AND PAH                          Go to record 10

3046469
Title:Devil in the diesel.
Author:Pearce, F.
Journal:New Sci. New Scientist -UK Edition   Vol156   Iss2105   Pg4
Publication Date:25 Oct 1997
CODEN:NWSCAL   ISSN:0262-4079
Language:English
Document Type:Journal
Abstract:Japanese researchers report that 3-nitrobenzanthrone identified in
the exhaust fumes of diesel engines may be the most strongly carcinogenic
compound ever analysed. The compound scored the highest ever result in the
Ames test which is the standard measure of the cancer causing potential of
toxic chemicals. One of the researchers from Kyoto University suggests that
the recent increase in the number of lung cancer patients could be linked
with respirable carcinogens like 3-nitrobenzoanthrone. 3-Nitrobenzanthrone
is a nitrated polycyclic aromatic hydrocarbon (nitro-PAH). It is produced
during reactions between ketones -by-products of burning fuel -and airborne
nitrogen oxides that take place on the surface of hydrocarbon particles in
diesel exhaust.

Chemical Substance(s):diesel fuel ; 3-nitrobenzanthrone
End of record 9
  ------------------------------------------------------------------------
 Record 10 of 92 for NITRO AND PAH                         Go to record 11

1039708
Title:Supercritical-fluid extraction of mononitrated polycyclic aromatic
hydrocarbons from tea -- correlation with the PAH concentration.
Author:Schlemitz, S. ; Pfannhauser, W.
Author Affiliation:Inst. Bio-and Food Chem., Dept. Food Chem., Univ.
Technol., 8010 Graz, Austria
Journal:Z. Lebensm.-Unters. -Forsch. A   Vol205   Iss4   Pg305-310
Publication Date:Oct 1997
CODEN:ZLFAFA   ISSN:1431-4630
Language:English
Document Type:Journal
Abstract:SFE of nitro-PAH and PAH from tea was performed at 90.degree.C and
230 atm statically for 3 min using CO2, then 5% acetonitrile was added (3
ml/min) in a dynamic step (2 min). The pressure was increased to 260 atm in
a 5 min static step followed by a dynamic step (10 min) with a CO2 flow of
4 ml/min. The 5 min static and 10 min dynamic extractions were repeated and
the analytes were trapped using glass beads at -5.degree.C. The trap was
heated to 35.degree.C and analytes desorbed using 2 ml hexane. Further
clean up was achieved using SX3 biobeads and elution with cyclohexane/ethyl
acetate (1:1), followed by silica cartridge clean up with elution using
cyclohexane/dichloromethane (1:1). Extracts obtained by the above and
Soxhlet and ultrasonication were analysed by GC on a fused-silica column
(30 m x 0.25 mm i.d.) coated with HP5-MS (0.25 .mu.m). Nitro-PAH were
determined using temperature programming from 50.degree.C (held for 1 min)
to 150.degree.C at 25.degree.C/min then to 300.degree.C (held for 1 min) at
10.degree.C/min. PAH were determined using temperature programming from
50.degree.C (held for 1 min) to 300.degree.C (held for 10 min) at
10.degree.C/min. He was used as carrier gas (1.2 ml/min) and MS detection
was performed using selected-ion monitoring. Extraction yields were highest
using SFE (102-162% recovery relative to Soxhlet). Correlations between
Nitro-PAH and PAH concentrations in tea samples were investigated.
Chemical Substance(s):nitro-compounds, polycyclic aromatic ); hydrocarbons,
polycyclic aromatic ); tea, )
End of record 10
  ------------------------------------------------------------------------
 Record 11 of 92 for NITRO AND PAH                         Go to record 12

1038326
Title:Effects of parameter on supercritical-fluid extraction of
nitro-polynuclear aromatic hydrocarbons from sand.
Author:Barzegar, M. ; Daneshfar, A. ; Ashraf-Khorassani, M.
Author Affiliation:Dept. Chem., Tarbiat Modaress Univ., Tehran, Iran
Journal:Anal. Chim. Acta   Vol349   Iss1-3   Pg245-252
Publication Date:29 Aug 1997
CODEN:ACACAM   ISSN:0003-2670
Language:English
Document Type:Journal
Abstract:A 10 .mu.l portion each of four nitro-PAH
9-hydroxy-3-nitrofluorene, 1-nitropyrene, 9-nitroanthracene and
2,7-dinitrofluorene (20 .mu.g/l) in CH2Cl2 was injected into an empty 1 ml
extraction cell, optionally half full or full of sand; in a modifier study
the sand was spiked with 50, 100 or 200 .mu.l methanol or toluene.
Extractions were performed at 200, 250, 300 or 350 atm. Supercritical CO2
was discharged (0.2-0.3 ml/min) through a restrictor into 3 ml methanol in
a 5 ml flask, cooled in an ice bath. Extraction efficiencies, measured by
LC with a variable UV-visible detector, were improved by a reduction in the
extraction cell dead volume, the addition of a static extraction period and
extraction at 350 atm at constant temperature; an increase in temperature
to 100.degree.C at constant pressure had little effect. Methanol and
toluene modifiers improved the extraction of nitro-PAH from sand but
toluene was more effective for the extraction of nitro-PAH from diesel and
air particulates, which were shown to contain 1-nitropyrene.
Chemical Substance(s):nitro-compounds, polycyclic aromatic ); sand, )
End of record 11
  ------------------------------------------------------------------------
 Record 12 of 92 for NITRO AND PAH                         Go to record 13

1037545
Title:Determination of polycyclic aromatic compounds and heavy metals in
sludges from biological sewage treatment plants.
Author:Bodzek, D. ; Janoszka, B. ; Dobosz, C. ; Warzecha, L. ; Bodzek, M.
Author Affiliation:Dept. Chem., Fac. Med., Silesian Med. Acad., 41-808
Zabrze, Poland
Journal:J. Chromatogr., A   Vol774   Iss1-2   Pg177-192
Publication Date:11 Jul 1997
CODEN:JCRAEY   ISSN:0021-9673
Language:English
Document Type:Journal
Abstract:Identification of PAHs and their derivatives in sewage sludge was
studied and a schematic diagram was devised. Analytes were extracted from
sludge into DMF and portions of this extract were treated separately by SPE
on a 3 ml Bakerbond silica cartridge, by liquid-solid chromatography in a
glass column (20 x 1.5 cm i.d.) of silica (70 to 270 mesh) containing 10%
H2O, and by TLC on a layer (20 x 10 cm x 0.25 mm thick) of Merck silica
60F254 to fractionate PAHs. TLC on silica/kieselguhr with
dichloromethane/methanol as mobile phase was used to obtain an aza-arene
fraction and on alumina with dichloromethane/hexane/ethyl ether mobile
phase to obtain an amino-PAH fraction. Nitro-PAHs were collected by
liquid-solid chromatography on silicic acid with hexane/benzene as eluent
and were then derivatized to amides for analysis. Aza-arenes and amino-PAHs
were also obtained by liquid-solid chromatography on alumina with
CHCl3/ethanol as eluent, followed by class separation on silicic acid with
benzene and benzene/ethyl ether as selective eluents. Further analysis was
by GC-MS on a column (25 m x 0.25 mm i.d.) coated with 0.25 .mu.m of HP
ULtra-2 with He as carrier gas, a temperature programme from 60.degree.C to
280.degree.C or 300.degree.C (details given) and 70 eV EIMS for
identifications or GC-FID on a column (30 m x 0.32 mm i.d.) coated with 1
.mu.m of Supelco PTE-5 and programmed from 100.degree.C to 300.degree.C
with He as carrier gas for quantitation of PAH. Tabulated results are
presented for 32 PAH, eight nitro-PAH, eight amino-PAH and 12 aza-arenes.
Typical contents of nine metals in sewage plant sludges as determined by
AAS are also tabulated.
Chemical Substance(s):hydrocarbons, polycyclic aromatic ); aza-arenes );
waste solids, sewage sludge, )
End of record 12
  ------------------------------------------------------------------------
 Record 13 of 92 for NITRO AND PAH                         Go to record 14

1036739
Title:Polynuclear aromatic hydrocarbons (PAH), benz[a]pyrene (BaPY) and
nitrated-PAH (N-PAH) in suspended particulate matter. (Proposal for
revision of the Italian Reference Method).
Author:Cecinato, A.
Author Affiliation:Ist. sull'Inquinamento Atmosferico-CNR, 00016
Monterotondo Scalo, Rome, Italy
Journal:Ann. Chim. (Rome)   Vol87   Iss7-8   Pg483-496
Publication Date:Jul-Aug 1997
CODEN:ANCRAI   ISSN:0003-4592
Language:English
Document Type:Journal
Abstract:PAH and nitro-PAH were determined in suspended particulate matter
by soot collection on a filter, solvent extraction and partition,
fractionation by HPLC, separation by GC and identification and quantitation
by GC-MS. Extraction was performed with acetone and CH2Cl2 and solvent
partition with hexane/DMSO. The aliphatic fraction was then directly
analysed by GC-MS. The aromatic fraction was further separated by HPLC on a
normal-phase column with hexane to CH2Cl2 polar solvents and detection at
280 nm. The separation of PAH from other non-polar polyaromatics was
performed on a DB-5 column. Nitro-PAH separation was performed on DB-1701
or DB-17 columns. Mass detection was performed at 70 eV and selected-ion
monitoring was used to identify the characteristic ions. The methodology
was suitable for measuring PAH and nitro-PAH concentrations in air from
0.02-20 ng/m3.
Chemical Substance(s):hydrocarbons, polycyclic aromatic ); nitro-compounds,
polycyclic aromatic ); airborne particulates, )
End of record 13
  ------------------------------------------------------------------------
 Record 14 of 92 for NITRO AND PAH                         Go to record 15

1038179
Title:Negative-ion laser desorption ionization time-of-flight mass
spectrometry of nitrated polycyclic aromatic hydrocarbons.
Author:Bezabeh, D. Z. ; Allen, T. M. ; McCauley, E. M. ; Kelly, A. D.
Author Affiliation:Dept. Chem., Univ. California, Davis, CA 95616, USA
Journal:J. Am. Soc. Mass Spectrom.   Vol8   Iss6   Pg630-636
Publication Date:Jun 1997
CODEN:JAMSEF   ISSN:1044-0305
Language:English
Document Type:Journal
Abstract:Selective detection of several nitro-PAH by laser desorption TOF
MS operated in negative-ion mode is described. Mass spectra were recorded
with use of a custom-built TOF mass spectrometer operated in the linear
mode. A Nd:YAG laser with a 8 ns pulse was used to effect desorption and
ionization of the sample at 266 and 213 nm, respectively. The potentials
applied were -4.5 kV repellor; -1.5 kV extractor; and 0 kV accelerator and
drift tube. The negative ions produced from each laser pulse were
accelerated down the flight tube and recorded with a dual microchannel
plate detector operating at 2 kV. The resulting current was recorded. The
lowest concentration of nitro-PAH detected for 1-nitropyrene and
2-nitrofluorene was 100 ppb. Intense molecular anions were observed in
addition to the usual nitro-PAh identifiers of cyanide and nitrite. The
method was applied to the detection of nitro-PAH in a diesel particulate
sample.
Chemical Substance(s):nitro-compounds, polycyclic aromatic ); exhaust
gases, diesel-engine, ); airborne particulates, )
End of record 14
  ------------------------------------------------------------------------
 Record 15 of 92 for NITRO AND PAH                         Go to record 16

1035362
Title:Sub-parts-per-billion determination of nitro-substituted polynuclear
aromatic hydrocarbons in airborne particulate matter and soil by
electron-capture tandem mass spectrometry.
Author:Vincenti, M. ; Minero, C. ; Pelizzetti, E. ; Fontana, M. ; De Maria,
R.
Author Affiliation:Dipt. Chim. Anal., Univ. Torino, 10125 Turin, Italy
Journal:J. Am. Soc. Mass Spectrom.   Vol7   Iss12   Pg1255-1265
Publication Date:Dec 1996
CODEN:JAMSEF   ISSN:1044-0305
Language:English
Document Type:Journal
Abstract:Soil was Soxhlet-extracted with toluene/methanol (1:1), and the
extract was cleaned up on a silica gel column with elution with 50 ml of
toluene. Exposed air filters were extracted with 50 ml of toluene. Either
extract was evaporated to 1 ml and analysed by GC-MS-MS; after separation
on a DB-5-MS column, the nitro-PAH were detected as M- by the first system
and as NO2- (m/z 46) by the second. Detection limits in air were 5-15
pg/m3, and calibration graphs were linear over three decades.
Chemical Substance(s):nitro-compounds, polycyclic aromatic ); airborne
particulates, ); soil, )
End of record 15
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 Record 16 of 92 for NITRO AND PAH                         Go to record 17

1034169
Title:Shpol'skii spectroscopy as a tool in environmental analysis for
amino- and nitro- substituted polycyclic aromatic hydrocarbons: a critical
evaluation.
Author:Kozin, I. S. ; Gooijer, C. ; Velthorst, N. H.
Author Affiliation:Dept. General and Anal. Chem., Free Univ., 1081 HV
Amsterdam, Netherlands
Journal:Anal. Chim. Acta   Vol333   Iss3   Pg193-204
Publication Date:8 Nov 1996
CODEN:ACACAM   ISSN:0003-2670
Language:English
Document Type:Journal
Abstract:Amino-PAH having 2-5 rings were studied in n-alkanes by
room-temperature fluorimetry and low-temperature Shpol'skii spectrometry.
The vibrationally resolved cryogenic fluorescence and phosphorescence
spectra of several amino-substituted naphthalenes, anthracenes and
fluorenes are reported, together with the spectra of four- and
five-membered ring amino-PAH. The photostability of the amino-PAH and the
effect of solidification rate on spectral quality are discussed. Nitro-PAH
were determined by reduction with Zn powder to convert them to the
corresponding aromatic amines before Shpol'skii luminescence detection. The
technique was optimized using a mixture of standard reference materials
containing parent and nitro-PAH. The method was applied to the
determination of 1-nitropyrene in a diesel particulate reference material
(SRM 1650). The analyte was extracted with solvent and separated by
normal-phase LC prior to reduction and fluorimetry. The results agreed with
the certified values and those obtained by chromatographic methods.
Chemical Substance(s):hydrocarbons, polycyclic aromatic, amino- );
nitro-compounds, polycyclic aromatic ); environmental materials, ( )
End of record 16
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 Record 17 of 92 for NITRO AND PAH                         Go to record 18

1035168
Title:Analysis of nitro-PAH in food matrices by online reduction and
high-performance liquid chromatography.
Author:Schlemitz, S. ; Pfannhauser, W.
Author Affiliation:Inst. Bio-and Food Chem., Graz Univ. Technol., 8010
Graz, Austria
Journal:Food Addit. Contam.   Vol13   Iss8   Pg969-977
Publication Date:Nov-Dec 1996
CODEN:FACOEB   ISSN:0265-203X
Language:English
Document Type:Journal
Abstract:Food (10-20 g) was homogenized and Soxhlet-extracted with
acetonitrile or subjected to ultrasonic extraction with aqueous
acetonitrile. The extracts were cleaned up by SEC on a biobeads SX-3 column
using cyclohexane/ethylacetate (1:1), then analysed by GC-MS (details
given) or by HPLC. For HPLC, sample was passed through a column (5 cm x 4
mm i.d.) packed with 5 .mu.m alumina coated with Pt and Rh (preparation
described) for online reduction of nitro-PAH at 80.degree.C, prior to
separation on a 5 .mu.m LiChrospher 60 RP-Select B column (25 cm x 4 mm
i.d.) with aqueous 65% methanol as mobile phase (0.9 ml/min) and
fluorescence detection (wavelengths given). Detection limits were 0.5-150
pg. Calibration graphs were linear for 0.5-500 pg. The RSD (n = 10) for 50
pg 1-nitropyrene was 1.7%. Recoveries were ~80%.
Chemical Substance(s):nitro-compounds, polycyclic aromatic ); foods, )
End of record 17
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 Record 18 of 92 for NITRO AND PAH                         Go to record 19

1033823
Title:Supercritical-fluid chromatography with electrochemical detection of
phenols and polyaromatic hydrocarbons.
Author:Dressman, S. F. ; Simeone, A. M. ; Michael, A. C.
Author Affiliation:Dept. Chem., Univ. Pittsburgh, Pittsburgh, PA 15260
Journal:Anal. Chem.   Vol68   Iss18   Pg3121-3127
Publication Date:15 Sep 1996
CODEN:ANCHAM   ISSN:0003-2700
Language:English
Document Type:Journal
Abstract:Mixtures of 11 priority phenols and 13 PAH were separated by SFC
on a packed diol column at 60.degree.C with neat and methanol-modified CO2
mobile phases. The self-contained online electrochemical detector comprised
a Pt disc working electrode inside a Pt tube counter electrode, which were
both coated with a thin poly(ethylene oxide) film containing lithium
triflate. The detector was operated at -1.5 to +2 V or at 0-2 V, which
allowed the detection of oxidizable and reducible components of the
mixtures. Detection limits were in the low ng range with a linear response
over two decades of amount injected. Overlapping elution profiles of
chloro-, methyl- and nitro-phenols could be resolved by using the
differences between their half-wave potentials. Addition of 1% methanol to
CO2 decreased the total analysis time of phenols from 50 to 20 min compared
with unmodified CO2.
Chemical Substance(s):phenols ); hydrocarbons, polycyclic aromatic )
End of record 18
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 Record 19 of 92 for NITRO AND PAH                         Go to record 20

1033439
Title:Laser desorption/ionization time-of-flight mass spectrometry of
nitrated polycyclic aromatic hydrocarbons.
Author:Dotter, R. N. ; Smith, C. H. ; Young, M. K. ; Kelly, P. B. ; Jones,
A. D. ; McCauley, E. M. ; Chang, D. P. Y.
Author Affiliation:Dept. Chem., Facility Advanced Instrumentation, Univ.
California, Davis, CA 95616, USA
Journal:Anal. Chem.   Vol68   Iss14   Pg2319-2324
Publication Date:15 Jul 1996
CODEN:ANCHAM   ISSN:0003-2700
Language:English
Document Type:Journal
Abstract:A 20-30 .mu.l sample of a nitro-PAH (listed) in CH2Cl2 (5-10
mg/ml) was deposited on the flattened Al probe tip (~2 cm2), positioned
perpendicular to the flight tube axis of a TOF mass spectrometer operated
in linear mode. Photons at 213 nm were generated from the sum mixing of a
Nd:YAG laser fundamental at 1064 nm and the fourth harmonic at 266 nm in a
.beta.-barium borate crystal. A plume that contained neutrals, ions and
electrons, was generated by interaction of a laser pulse (5-20 .mu.J) with
the sample. Positive ions, accelerated into the flight tube were detected
by a dual microchannel plate detector. The relative density of the positive
molecular ion observed for each nitro-PAH was greater with 213 nm radiation
than with 266 nm radiation. A strong [M - NO]+ peak was observed in all
spectra, accompanied by a weak NO+ with 266 nm radiation which intensified
with 213 nm radiation.
Chemical Substance(s):nitro-compounds, polycyclic aromatic, )
End of record 19
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 Record 20 of 92 for NITRO AND PAH                         Go to record 21

1031741
Title:Liquid-chromatographic determination of nitro-substituted polynuclear
aromatic hydrocarbons by sequential electrochemical and fluorescence
detection.
Author:Murayama, M. ; Dasgupta, P. K.
Author Affiliation:Dept. Chem. and Biochem., Texas Tech Univ., Lubbock, TX
79409-1061, USA
Journal:Anal. Chem.   Vol68   Iss7   Pg1226-1232
Publication Date:1 Apr 1996
CODEN:ANCHAM   ISSN:0003-2700
Language:English
Document Type:Journal
Abstract:Methanol/1mM-H2SO4 (17:3) mobile phase of pH 2.8 was pumped at 0.5
ml/min through a pulse dampener PRP-1 column and a guard cell for O2
removal before injection of nitro-PAH analytes. Analysis was carried out on
a 3 .mu.m Spherisorb ODS II reversed-phase column (15 cm x 6 mm i.d.)
equipped with a guard column (2 cm x 6 mm i.d.) of the same material, with
coulometric detection in the reductive mode at a cathodic potential of <=2
V followed by fluorescence detection of the amines at 380-485 nm
(excitation at 260-285 nm). The detection limits were in the range 0.75-4.5
pmol and the peak height RSD were 1.27-5.3% at 300 pmol injected (n = 8).
The method was applied to diesel engine exhaust samples.
Chemical Substance(s):nitro-compounds, polycyclic aromatic ); exhaust
gases, diesel-engine, )
End of record 20
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 Record 21 of 92 for NITRO AND PAH                         Go to record 22

1032105
Title:Water analysis by online solid-phase extraction - gas
chromatography-mass spectrometry.
Author:Jahr, D. ; Vreuls, J. J. ; Louter, A. J. H. ; Loebel, W.
Author Affiliation:Landesuntersuchungsamt Gesundheitswesen Suedbayern,
85764 Oberschleissheim, Germany
Journal:GIT Fachz. Lab.   Vol40   Iss3   Pg178, 180-183
Publication Date:Mar 1996
CODEN:GITEAR   ISSN:0016-3538
Language:German
Document Type:Journal
Abstract:Details are given of an automated system, based on the Autoselect
2000 (Interchro, Bad Kreuznach, Germany), in which water samples were
pumped through a PLRP-S column conditioned with ethyl acetate and H2O, the
column was dried by passage of N2 and a microprocessor-controlled loop
interface (Autoloop 2000, Interchro) was used to elute the adsorbed
compounds with ethyl acetate for GC-MS analysis. The GC system comprised a
5 m retention gap, a 3 m retaining precolumn and a separating column. The
system was applied to the determination of pesticides, PAH, mineral oil,
and aromatic amines and nitro-compounds leached from explosives. Analyses
were also carried out with semiautomated concentration in a system of two
six-port valves and two HPLC pumps controlled by a switching system (Must
Sytem, Spark Holland, Emmen, Netherlands). Detection limits in the ng/l or
low .mu.g/l range were attained. Advantages and drawbacks of the systems
are outlined.
Chemical Substance(s):pesticides ); aromatic compounds ); petroleum );
hydrocarbons, polycyclic aromatic ); waters, natural, )
End of record 21
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 Record 22 of 92 for NITRO AND PAH                         Go to record 23

1033053
Title:Characterization of nitro-PAH adsorbed on environmental
micro-particles: a comparison of LAMMA, Fourier-transform mass spectrometry
laser microprobe analysis and gas chromatography-tandem mass spectrometry.
Author:Hachimi, A. ; Krier, G. ; Poitevin, E. ; Schweigert, M. C. ; Peter,
S. ; Muller, J. F.
Author Affiliation:Lab. Spectrometrie Masse et Chim. Laser, I.P.C.
Technopole Metz 2000, 57078 Metz 3, France
Journal:Int. J. Environ. Anal. Chem.   Vol62   Iss3   Pg219-230
Publication Date:1996
CODEN:IJEAA3   ISSN:0306-7319
Language:English
Document Type:Journal
Abstract:A methodology for characterizing nitro-PAH adsorbed onto
environmental matrices is presented based on the direct analysis by laser
microprobe MS techniques and the indirect analysis by GC-tandem MS.
Micro-particles were collected from industrial fumes using an impactor
device fitted with nine aluminium filters (0.4-9 .mu.m). Particles were
removed from the filters for analysis by laser microprobe mass analysis
(LAMMA)-TOF-MS and laser microprobe FTICR MS. In both methods desorption
and ionization was effected by laser irradiation at short wavelength (193
or 222 nm) and low power (~=6 x 106 W/cm2). Nitrated compounds were
characterized by [M - NO]- ions (m/z = 193, 217 and 352) and the
corresponding M- ions (m/z = 223, 247 and 382). The associated low mass
negative-ions CN, CNO, NO2 and CNO2 were detected by LAMMA-TOF-MS but not
by FTMS. Methylene chloride extracts of the particulate matter were
subjected to analysis by GC-tandem negative-ion CIMS mode with the first
quadrupole set to transmit the molecular ion [M]0. These molecular ions
were fragmented by collision with Ar and two product ions, [M - NO]-1 and
[NO2]- were monitored with the third quadrupole. This technique allowed the
detection of five nitro-PAH (listed).
Chemical Substance(s):nitro-compounds, polycyclic aromatic ); environmental
materials, )
End of record 22
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 Record 23 of 92 for NITRO AND PAH                         Go to record 24

1030762
Title:Device for efficient solvent collection of environmentally relevant
compounds in offline SFE.
Author:Wenclawiak, B. W. ; Heemken, O. P. ; Sterzenbach, D. ; Schipke, J. ;
Theobald, N. ; Weigelt, V.
Author Affiliation:Anal. Chem. I, Univ.-GH Siegen, 57068 Siegen, Germany
Journal:Anal. Chem.   Vol67   Iss24   Pg4577-4580
Publication Date:15 Dec 1995
CODEN:ANCHAM   ISSN:0003-2700
Language:English
Document Type:Journal
Abstract:Analyte losses in SFE were reduced using a trapping device
obtained by placing a Dewar condenser on top of the collection vial. High
recoveries were achieved for alkanes, PAH, nitro-PAH, fatty acid esters and
chlorinated hydrocarbons. Collection losses were reduced to ~2% with the
condenser at -25.degree.C.
Chemical Substance(s):alkanes ); hydrocarbons, polycyclic aromatic );
hydrocarbons, polycyclic aromatic, nitro- ); fatty acid esters );
hydrocarbons, chloro- ); environmental materials, )
End of record 23
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 Record 24 of 92 for NITRO AND PAH                         Go to record 25

1029984
Title:Applicability of low temperature high-resolution fluorescence
spectroscopy to the analysis of nitro and amino polycyclic aromatic
hydrocarbons.
Author:Matsuzawa, S.; Garrigues, P.; Budzinski, H.; Bellocq, J.; Shimizu,
Y.
Author Affiliation:Natl. Inst. Resources and Environ., Tsukuba, Ibaraki
305, Japan
Journal:Anal. Chim. Acta   Vol312   Iss2   Pg165-177
Publication Date:30 Aug 1995
CODEN:ACACAM   ISSN:0003-2670
Language:English
Document Type:Journal
Abstract:A sample (.apprx.e;100 mg) was dissolved in 6 ml
methanol/H2O/0.05% aqueous CuCl2 (10:1:1). The reaction vessel was wrapped
in Al foil to prevent photolysis, then 0.05 g KBH4 was carefully added.
After 1 h the reaction products were extracted with 12 ml CH2Cl2. The
organic extract was evaporated to dryness under N2 and the residue was
dissolved in hexane, heptane, pentane or octane. The resulting solution was
transferred to a quartz measurement cell. The cell was immersed in liquid N
for .apprx.e;30 s, then cooled to 15 K (2 K/min); a Jasco SS-50CS
fluorescence detector was used with a 1800 1/mm grating and a 0.08 nm
bandwidth. Fourteen of the 22 nitro PAH tested produced a high-resolution
fluorescence spectrum.
Chemical Substance(s):hydrocarbons, polycyclic aromatic
End of record 24
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 Record 25 of 92 for NITRO AND PAH                         Go to record 26

1030022
Title:Pentafluorobenzyl derivatives for the gas-chromatographic
determination of hydroxy-polycyclic aromatic hydrocarbons in urban
aerosols.
Author:Galceran, M. T.; Moyano, E.; Poza, J. M.
Author Affiliation:Dept. Anal. Chem., Univ. Barcelona, 08028 Barcelona,
Spain
Journal:J. Chromatogr., A   Vol710   Iss1   Pg139-147
Publication Date:25 Aug 1995
CODEN:JCRAEY   ISSN:0021-9673
Language:English
Document Type:Journal
Abstract:Airborne particulate matter was collected on Whatman EPM-2000
glass fibre filter papers (20.3 .times. 25.4 cm) using a Sierra Misco Model
650 gas sampler. The filters were extracted ultrasonically using
dichloromethane and then methanol (30 min periods at 30.degree.C), the
combined extracts dried over anhydrous Na2SO4, evaporated to dryness and
reconstituted with hexane. After transfer to alumina and silica SPE
cartridges in series, the hydroxy-PAH were eluted with methanol. The
methanol fraction was evaporated to dryness, dissolved in acetone and
derivatized with 10% pentafluorobenzyl bromide in acetone, 18-crown-6 in
acetone and K2CO3 for 1 h at 25.degree.C. After clean up by SPE on silica
cartridges with hexane elution the pentafluorobenzyl ethers were analysed
by GC on a fused-silica column (30 m .times. 0.25 mm i.d.) coated with
DB-17 (0.25 .mu.m) with temperature programming from 100.degree.C (held for
1 min) to 280.degree.C (held for 20 min) at 6.degree.C/min or from
100.degree.C (held for 2 min) to 125.degree.C (held for 1 min) at
25.degree.C/min to 240.degree.C (held for 1 min) at 30.degree.C/min then to
300.degree.C (held for 20 min) at 30.degree.C/min with He as carrier gas
(30 cm/sec) and ECD or methane negative ion CIMS detection. Detection
limits were 0.01-3.3 pg for ECD and the concentrations of 5-hydroxyindol,
2-nitro-1-naphthol, 2-hydroxy-1,4-naphthoquinone and 2-hydroxy-9-fluroenone
in air were 5-189 pg/m3.
Chemical Substance(s):hydrocarbons, polycyclic aromatic; air
End of record 25
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 Record 26 of 92 for NITRO AND PAH                         Go to record 27

1029521
Title:Identification of polycyclic aromatic compounds in urban air
particulate extracts by online coupled LC-GC-ITD-MS.
Author:Lewis, A. C.; Askey, S. A.; Robinson, R. E.; Bartle, K. D.; Pilling,
M. J.
Author Affiliation:School Chem., Univ. Leeds, Leeds LS2 9JT, UK
Journal:Anal. Proc.   Vol32   Iss8   Pg297-300
Publication Date:Aug 1995
CODEN:ANPRDI   ISSN:0144-557X
Language:English
Document Type:j
Abstract:Urban air particulates were collected with a high volume air
sampler at 0.4 m3 through a quartz microfibre filter by the method of Lewis
et al. (Atmos. Environ. 1995, in press). The filter was extracted at
110.degree.C with CO2 and 10% toluene at 400 atm for 90 min (details
given). The extracts were collected in 3 ml CH2Cl2 and excess solvent was
evaporated to dryness. The residue was dissolved in 2 ml hexane and 20
.mu.l portions of the solution were applied to a 5 .mu.m Spherisorb LC
column (10 cm .times. 2 mm i.d.) with gradient elution (100 and 250
.mu.l/min) with CH2Cl2/pentane (programme details given) and detection at
254 nm. The eluent from the detector was transferred via a pneumatically
actuated switch valve to a fused-silica column (25 m .times. 0.32 mm i.d.)
coated with BPX-5 (0.33 .mu.m) equipped with a 4 m precolumn of the same
material operating with temperature programming (details given) with He as
carrier gas (no flow given) and ion-trap EIMS detection. Alkylated and
nitro-PAH as well as oxygenated PAH and N heterocyclic PAH (tabulated) were
identified by their GC retention times and mass spectra from a comparison
with those of library standards.
Chemical Substance(s):hydrocarbons, polycyclic aromatic; airborne
particulates
End of record 26
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 Record 27 of 92 for NITRO AND PAH                         Go to record 28

1030062
Title:The ubiquitous occurrence of nitro-PAH of photochemical origin in
airborne particles.
Author:Ciccioli, P.; Cecinato, A.; Brancaleoni, E.; Frattoni, M.; Zacchei,
P.; Vasconcellos, P. de C.
Author Affiliation:Ist. Inquinamento Atmosferico, Area Ricerca Roma, C. N.
R., 00016 Monterotondo Scalo, Italy
Conference Information:Presented at the symposium "Spread of Toxic
Substances and Environmetal Pollution" held in Venice, Italy, 9-12 Apr 1994
Journal:Ann. Chim. (Rome)   Vol85   Iss7-8   Pg455-469
Publication Date:Jul-Aug 1995
CODEN:ANCRAI   ISSN:0003-4592
Language:English
Document Type:Journal
Abstract:Nitro-PAH can be formed in daylight anywhere in the troposphere
that sufficient amounts of NO2 and parent PAH are available. A diagram of
the analytical scheme is presented; it involves liquid-liquid partitioning
and HPLC fractionation and the determination of aliphatic compounds and
oxygenated PAH by GC with FID and of PAH and nitro-PAH by GC-MS.
Chemical Substance(s):hydrocarbons, polycyclic aromatic, nitro-; air
End of record 27
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 Record 28 of 92 for NITRO AND PAH                         Go to record 29

1028646
Title:Immunochemical detection of metabolites of parent and nitro
polycyclic aromatic hydrocarbons in urine samples from persons
occupationally exposed to diesel exhaust.
Author:Scheepers, P. T. J.; Fijneman, P. H. S.; Beenakkers, M. F. M.; de
Lepper, A. J. G. M.; Thuis, H. J. T. M.; Stevens, D.; van Rooij, J. G. M.;
Noordhoek, J.; Bos, R. P.
Author Affiliation:Toxicology Dept., Univ. Nijmegen, 6500 Nijmegen,
Netherlands
Journal:Fresenius' J. Anal. Chem.   Vol351   Iss7   Pg660-669
Publication Date:Apr 1995
CODEN:FJACES   ISSN:0937-0633
Language:English
Document Type:Journal
Abstract:Urine was centrifuged at 600 g for 5 min and the supernatant was
applied to a Sep-Pak C18 SPE cartridge. The cartridge was washed with
aqueous 60% methanol and elution was effected with 100% methanol. The
eluate was dried under N2 at 40.degree.C and the residue dissolved in
methanol. A microtitre plate was coated with 6-amino-benzo(a)pyrene/BSA by
overnight incubation at 4.degree.C. PBS/newborn calf serum/Tween 20 was
added to each well and the plate was incubated at 37.degree.C for 1 h.
After drying, the prepared urine and 4D5 antibody were added and incubated
at 37.degree.C for 1.5 h. The plates were washed, a second antibody 1 g
G-AP was added, the plates were incubated at 37.degree.C for 1-5 h, washed
and rinsed with filtered substrate buffer of 1M-diethanolamine/0.7mM-MgCl2
of pH 8.6. Nitrophenyl-phosphate disodium (0.3M) in substrate buffer was
added, the plates were incubated at 37.degree.C for 0.5 h and the
absorbance was measured at 405 nm. The sensitivity of the 50% inhibition
level was 1 .mu.g/l 1-aminopyrene with a RSD of 21%. The method was used to
detect PAH and nitro-PAH metabolites in the urine of creosote and railway
workers. Results are discussed.
Chemical Substance(s):hydrocarbons, polycyclic aromatic; hydrocarbons,
polycyclic aromatic, nitro-; urine
End of record 28
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 Record 29 of 92 for NITRO AND PAH                         Go to record 30

1028351
Title:Analytical multimethod for the determination of low volatile organic
pollutants in sediments and sewage sludges.
Author:Kolb, M.; Bohm, H. B.; Bahadir, M.
Author Affiliation:Inst. Ecol. Chem. and Waste Anal., Tech. Univ.
Braunschweig, 38106 Braunschweig, Germany
Journal:Fresenius' J. Anal. Chem.   Vol351   Iss2-3   Pg286-296
Publication Date:Jan-Feb 1995
CODEN:FJACES   ISSN:0937-0633
Language:English
Document Type:Journal
Abstract:Sediments and sewage sludges were extracted at natural pH, pH 2
and pH 12 (details given). After concentration, the extracts were dissolved
in cyclohexane/ethyl acetate and fractionated by GPC on Bio-Beads S-X8
(details given). The eluate was concentrated, the residue dissolved in
hexane and cleaned up by column chromatography on an alumina column
(details given). Elution with hexane gave a nonpolar fraction and elution
with ethyl acetate and methanol/ammonia (99:1) gave a polar fraction. The
nonpolar fraction was further fractionated by silica gel chromatography
with elution with hexane to give chlorohydrocarbons, with hexane/ethyl
acetate (49:1) to give PAH and ethyl acetate or CH2Cl2 to give anilines.
The eluates were concentrated and spiked with
1,2,3,4-tetrachloronaphthalene and 1-nitro-2,4,6-tri-t-butylbenzene
(aniline fraction only) as internal standards. S was removed from the first
fraction by the method of Jensen et al. and aliphatic hydrocarbons by
silica gel clean up (details given). The polar fraction was derivatized and
cleaned up on silica gel with elution with hexane/ethyl acetate (49:1),
(24:1) giving phenols and (4:1) for phthalates (details given). The
fractions were analysed by GC on a fused-silica column (30 m .times. 0.25
mm i.d.) coated with DB-5 (0.25 .mu.m) with temperature programming
(details given), He as carrier gas (1 ml/min) and ECD or MS detection
(details given). Results are discussed.
Chemical Substance(s):pollutants; organic compounds, volatile;
hydrocarbons, chloro-; hydrocarbons, polycyclic aromatic; aniline
derivatives; phenols; phthalic acid esters; sediments; waste solids, sewage
sludge
End of record 29
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 Record 30 of 92 for NITRO AND PAH                         Go to record 31

1028396
Title:Negative chemical ionization eliminates matrix effects.
Author:Ardrey, R. E.; Bukowski, N.; Gummersbach, J.
Author Affiliation:Univ. Huddersfield, Huddersfield, UK
Journal:LaborPraxis   Vol18   Iss11   Pg92-94
Publication Date:Nov 1994
CODEN:LAPRDE   ISSN:0344-1733
Language:German
Document Type:Journal
Abstract:The effect of negative CI was demonstrated on a sewage sludge
contaminated with PCB. The sample was extracted with an equal wt. of
hexane. The extract was spiked with 10 pg/ml of each of seven PCB isomers.
Portions of the solution were analysed on a column (15 m .times. 0.25 mm
i.d.) coated with DB5 (0.25 .mu.m), with He (0.3 bar) as carrier gas,
operated with temperature programming from 60.degree.C (held for 1 min) to
280.degree.C (held for 10 min) at 20.degree.C/min and MS detection. The
total ion chromatogram shows a number of components present on top of a
large matrix effect, ascribed to a complex hydrocarbon interference.
Although some peaks can be identified, their quantitative determination is
hindered by the matrix interference. By contrast, spectra of the same
solution with negative CI are clear and easily interpreted. The presence of
particular PCB can be confirmed by scans at m/z = 360 and 35 (Cl). The
method is generally applicable to electrophilic compounds, e.g.,
phthalates, PAH, nitro compounds and, P and S compounds.
Chemical Substance(s):waste solids, sewage sludge
End of record 30
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 Record 31 of 92 for NITRO AND PAH                         Go to record 32

1027821
Title:Simultaneous determination of polycyclic aromatic hydrocarbons and
their nitro-derivatives in airborne particulates by HPLC with
fluorescence/chemiluminescence detection.
Author:Murahashi, T.; Hayakawa, K.; Iwamoto, Y.; Miyazaki, M.
Author Affiliation:Fac. Pharm. Sci., Kanazawa Univ., Kanazawa, Ishikawa
920, Japan
Journal:Bunseki Kagaku   Vol43   Iss11   Pg1017-1020
Publication Date:Nov 1994
CODEN:BNSKAK   ISSN:0525-1931
Language:Japanese
Document Type:Journal
Abstract:PAH and nitro-PAH were extracted from sub-mg quantities of
collected airborne particulates into benzene/ethanol, cleaned up by
liquid-liquid partition, and heated under reflux with NaSH. The resulting
mixture was injected (20 .mu.l) into an HPLC system (diagram presented) in
which the compounds were separated by class on an ODS column (1 cm .times.
4.6 mm i.d.) operated with acetonitrile/imidazole-HClO4 buffer solution
(1:1) as mobile phase and connected to a switching valve for direction of
the nitro-PAH to an ODS column (25 cm .times. 4.6 mm i.d.) operated with
the same mobile phase and of the PAH to a 201TP54 column (25 cm .times. 4.6
mm i.d.) operated with aqueous 75% acetonitrile. The nitro-PAH were
detected by chemiluminescence after post-column reaction with
bis-(2,4,6-trichlorophenyl) oxalate and H2O2; 1-nitro- and 1,3-, 1,6- and
1,8-dinitro-pyrene were determined with 2-fluoro-7-nitrofluorene as
internal standard. The PAH were detected by time-programmed fluorescence
(excitation at 270, 270, 280 and 285 nm during the intervals 0-11, 11-16,
16-22 and 22-60 min and emission in these intervals of 425, 390, 435 and
415 nm, respectively); fluoranthene, pyrene, benz(a)anthracene, chrysene,
benz(e)acephenanthrylene, benzo(k)fluoranthene, benzo(a)pyrene and coronene
were determined.
Chemical Substance(s):hydrocarbons, polycyclic aromatic; nitro-compounds,
polycyclic aromatic; pyrene, 1-nitro- (5522-43-0); pyrene, 1,3-dinitro-;
pyrene, 1,6-dinitro-; pyrene, 1,8-dinitro-; fluoranthene (206-44-0); pyrene
(129-00-0); benz[<a>]anthracene (56-55-3); chrysene (218-01-9);
benz[e]acephenanthrylene; benzo[k]fluoranthene; benzo[<a>]pyrene (50-32-8);
coronene (191-07-1); airborne particulates
End of record 31
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 Record 32 of 92 for NITRO AND PAH                         Go to record 33

1027142
Title:Reversed-phase extraction of arenes and nitroarenes in environmental
samples.
Author:Librando, V.; D'Arrigo, G.; Spampinato, D.
Author Affiliation:Chem. Dept., Catania Univ., 95125 Catania, Italy
Journal:Analusis   Vol22   Iss6   Pg340-342
Publication Date:Jul-Aug 1994
CODEN:ANLSCY   ISSN:0365-4877
Language:English
Document Type:Journal
Abstract:PAH and their nitro derivatives e.g., naphthalene and
1-nitropyrene, in H2O/acetonitrile (3:5) were cleaned up on a
methanol-activated C18 SPE cartridge (500 mg/3 ml). Hexane (2 .times. 500
.mu.l) and CH2Cl2 (2 .times. 500 .mu.l) were passed down the column and the
eluates were dried and dissolved in methanol. The eluted nitro-PAH were
determined by GC on a polyphenylmethylsiloxane and a HP-1 column (10 m
.times. 0.53 mm i.d. each) operated with temperature programming from
100.degree.C (held for 2 min) to 205.degree.C (held for 1 min) and then to
270.degree.C at 15.degree.C/min, with He as carrier gas (15 ml/min) and N-P
detection. The eluted PAH were determined by GC with fluorescence detection
(procedure described). Recoveries of 16 PAH and eight nitro-PAH derivatives
in hexane (0.4 mg/ml) were 87.4-98.28%. The method was applied to samples
of urban dust, incinerator residue and soil with detection limits of 5-30
pg.
Chemical Substance(s):hydrocarbons, polycyclic aromatic; nitro-compounds,
polycyclic aromatic; environmental materials
End of record 32
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 Record 33 of 92 for NITRO AND PAH                         Go to record 34

1026514
Title:Determination of mono- and dinitro polycyclic aromatic hydrocarbons
by online reduction and high-performance liquid chromatography with
chemiluminescence detection.
Author:Li, H.; Westerholm, R.
Author Affiliation:Dept. Anal. Chem., Arrhenius Lab., Stockholm Univ., 106
91 Stockholm, Sweden
Journal:J. Chromatogr. A   Vol664   Iss2   Pg177-182
Publication Date:1 Apr 1994
CODEN:JCRAEY   ISSN:0021-9673
Language:English
Document Type:Journal
Abstract:Online reduction of nitro-PAH to amino-PAH was carried out using a
catalyst column (4 cm .times. 3 mm i.d.) containing grained three-way
catalyst material (140-160 mm particle size) manufactured for the reduction
of vehicle exhaust gas emissions. Sample soln. was injected into an aq. 65%
methanol carrier stream (0.3 ml/min) and held in the catalyst column at
80.degree.C for 90 s by stopping the flow. The reduced sample was eluted
for 60 s and transferred to a column (15 cm .times. 4.6 mm i.d.) of C18 (3
mm) protected by a C18-A Guard-Disc (1 .times. 4.6 mm i.d.), with
acetonitrile/50mM-nitrated imidazole buffer soln. of pH 7.5 (13:7) as
mobile phase (1 ml/min) and chemiluminescence detection following the
post-column addition of a mixture of
0.25mM-bis(2,4,6-trichlorophenyl)oxalate and 25mM-H2O2 in
acetonitrile/ethyl acetate (3:1) at 0.7 ml/min. Detection limits for
1,8-dinitropyrene, 2-nitroanthracene, 1-nitropyrene, 6-nitrochrysene,
3-nitroperylene and 1-nitroperylene were 1-10 pg. The method was applied to
diesel-exhaust particle material extracts.
Chemical Substance(s):nitro-compounds, polycyclic aromatic; exhaust gases,
diesel-engine
End of record 33
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 Record 34 of 92 for NITRO AND PAH                         Go to record 35

1026125
Title:Selective and sensitive analysis of 1-nitropyrene in diesel exhaust
particulate extract by multi-dimensional HPLC.
Author:Veigl, E.; Posch, W.; Lindner, W.; Tritthart, P.
Author Affiliation:Inst. Pharm. Chem., Karl Franzens Univ. Graz, 8010 Graz,
Austria
Journal:Chromatographia   Vol38   Iss3-4   Pg199-206
Publication Date:Feb 1994
CODEN:CHRGB7   ISSN:0009-5893
Language:English
Document Type:Journal
Abstract:Particulates were collected on a PTFE-coated glass-fibre filter at
52.degree.C, which was then refluxed with toluene for .gtoreq.1 h. After
hot filtration, the extract was concentrated and a DMSO/cyclohexane
separation was performed. PAH were isolated in cyclohexane and separated
according to polarity on a silica gel column (20 mm i.d.; 100-200, 70-150
mesh) with cyclohexane, cyclohexane/toluene and cyclohexane/ethyl ether as
mobile phases. The extracts were dried under N2, redissolved in methanol
and injected on to a series of columns for analysis. The PAH nitro
derivatives were retained on a column (25 cm .times. 4 mm i.d.) packed with
pyrenebutyric acid amide on 7 .mu.m Lichrosorb Si 100. The fractions were
separated according to their lipophilicity and size on an 5 .mu.m RP8
column (12.5 cm .times. 4 mm i.d.), followed by reduction on a column (3 cm
.times. 4.6 mm i.d.) packed with Rh-Pt catalyst on 5 .mu.m alumina.
Methanol, H2O and 80% aq. methanol were used as mobile phases for the three
columns, respectively, with fluorimetric detection at 433 nm (excitation at
354 nm). The calibration graph was linear for 1-20 ng of nitropyrene, the
detection limit was 20 pg, the recovery was 72% and the RSD (n = 6) was 3%.
Chemical Substance(s):pyrene, 1-nitro- (5522-43-0); exhaust gases,
diesel-engine
End of record 34
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 Record 35 of 92 for NITRO AND PAH                         Go to record 36

1026549
Title:Identification of PAH nitro derivatives in airborne particulate
matter by TLC.
Author:Tyrpien, K.; Warzecha, L.; Bodzek, D.
Author Affiliation:Dept. Chem., Silesian Med. Acad., Fac. Med., 41-808
Zabrze, Poland
Journal:Chem. Anal. (Warsaw)   Vol39   Iss3   Pg389-393
Publication Date:1994
CODEN:CANWAJ   ISSN:0009-2223
Language:English
Document Type:Journal
Abstract:Particulate matter collected on fibre glass filters was extracted
with CH2Cl2. The extract was applied to a silicic acid column, deactivated
with 5% H2O and a fraction enriched in nitro-PAH was eluted with
hexane/benzene (1:1). Portions of this soln. and of standards (about 20
.mu.g in CH2Cl2) were applied to silica gel 60F254 plates, which were
developed with hexane/CH2Cl2 (1:1). Spots were identified by their RF
values, the characteristic fluorescence colours under 254 and 365 nm
radiation, changes after reduction with NaBH4 and by the effect of
quenching of fluorescence with CS2. Six nitro compounds were detected. In
some instances, bands were chromatographed, fractions were extracted with
methanol and the nitro compounds were identified by GLC on a CBP-5 column
with MS detection. The presence of 1-nitropyrene and 1-nitronaphthalene was
thus confirmed.
Chemical Substance(s):nitro-compounds, polycyclic aromatic; airborne
particulates
End of record 35
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 Record 36 of 92 for NITRO AND PAH                         Go to record 37

1026278
Title:Quantification of polycyclic aromatic hydrocarbons and their nitro
derivatives in atmospheric particulate matter of Augusta city.
Author:Librando, V.; Fazzino, S. D.
Author Affiliation:Chem. Dept., Catania Univ., 95100 Catania, Italy
Journal:Chemosphere   Vol27   Iss9   Pg1649-1656
Publication Date:Nov 1993
CODEN:CMSHAF   ISSN:0045-6535
Language:English
Document Type:Journal
Abstract:Atmospheric particulate matter was Soxhlet extracted with
acetonitrile. Purification and enrichment were conducted by reverse solid
phase extraction with a C18 cartridge activated with methanol. PAH were
analysed by HPLC with variable wavelength fluorescence detection using a
C18 reverse phase Vydac column (15 cm .times. 4.6 mm i.d.) with gradient
elution (1.5 ml/min) with aq. 50% acetonitrile for 5 min followed by
50-100% in 13 min. Nitro-derivatives of PAH were analysed by GC with N-P
detection using a 20 m column consisting of a wide-bore
polyphenylmethylsiloxane unit with an HP-1 methylsilicon unit (both 10 m
.times. 0.53 mm i.d.), with temp. programming from 100.degree.C (held for 2
min) to 205.degree.C at 15.degree.C/min, isotime of 1 min and then
increased to 270.degree.C at 15.degree.C/min (total analysis time 25 min),
with He as carrier gas (15 ml/min).
Chemical Substance(s):hydrocarbons, polycyclic aromatic; air
End of record 36
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 Record 37 of 92 for NITRO AND PAH                         Go to record 38

1024734
Title:Relationships of structures of nitro-polycyclic aromatic hydrocarbons
with high-performance liquid chromatography retention order.
Author:Fu, P. P.; Zhang, Y. M.; Mao, Y. L.; Von Tungeln, L. S.; Kim, Y. M.;
Jung, H. W.; Jun, M. J.
Author Affiliation:Natl. Center Toxicol. Res., Food and Drug
Administration, Jefferson, AR 72079, USA
Journal:J. Chromatogr.   Vol642   Iss1-2   Pg107-116
Publication Date:16 Jul 1993
CODEN:JOCRAM   ISSN:0021-9673
Language:English
Document Type:Journal
Abstract:Forty-six structurally related nitro-PAH and their corresponding
PAH classed as carcinogenic and mutagenic environmental pollutants were
used to study the relationship between structure and HPLC retention time.
Using reversed-phase HPLC, larger molecules had longer retention times,
while saturation of the aromatic rings shortened the retention time.
Isomers with a perpendicular nitro- group had shorter retention times than
if the nitro- substituent was parallel to the ring system. The addition of
a nitro- group caused a substantial decrease in retention time when
compared to its parent PAH. When using normal-phase HPLC, an additional
benzo- ring increased the retention time. The presence of one or two nitro-
groups on the molecule also increased the retention time, while saturation
of a benzo- ring decreased the retention time. The results suggest that the
polarity of the PAH or nitro-PAH is the principal factor for determining
its HPLC retention time.
Chemical Substance(s):hydrocarbons, polycyclic aromatic; nitro-compounds,
polycyclic aromatic
End of record 37
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 Record 38 of 92 for NITRO AND PAH                         Go to record 39

1023877
Title:Determination of oxygenated and nitro-substituted polycyclic aromatic
hydrocarbons by HPLC and electrochemical detection.
Author:Galceran, M. T.; Moyano, E.
Author Affiliation:Dept. Quim. Anal., Univ. Barcelona, 08028 Barcelona,
Spain
Journal:Talanta   Vol40   Iss5   Pg615-621
Publication Date:May 1993
CODEN:TLNTA2   ISSN:0039-9140
Language:English
Document Type:Journal
Abstract:Oxy- and nitro-substituted PAH were separated by HPLC on a column
(25 cm .times. 4 mm) of Nucleosil C18 (10 .mu.m) with acetonitrile -
methanol - acetate buffer at pH 4.0 (3:4:3) as the mobile phase and
reductive electrochemical detection. The optimum working potential was -650
mV. Good repetitivity, coeff. of variation (n = 5) of 5% and good linearity
were obtained for concn. in the range 0.2 to 2 mg l.minus.1. The method was
used to analyse atmospheric aerosol samples containing PAH derivatives down
to sub-ng levels.
Chemical Substance(s):hydrocarbons, polycyclic aromatic; air
End of record 38
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 Record 39 of 92 for NITRO AND PAH                         Go to record 40

1024927
Title:Fullerene-linked particles as LC chromatographic media and
modification of their electron donor/acceptor properties by secondary
chemical reactions.
Author:Stalling, D. L.; Guo, C.; Kuo, K. C.; Saim, S.
Author Affiliation:ABC Lab., Columbia, MO 65205, USA
Journal:J. Microcolumn Sep.   Vol5   Iss3   Pg223-235
Publication Date:May-Jun 1993
CODEN:JMSEEJ   ISSN:1040-7685
Language:English
Document Type:Journal
Abstract:Separation of fullerenes and aromatic compounds were investigated
using LC micro-columns containing either particles prepared from BrHC60
linked to amino-silica (Spherisorb-NH2, Phenomenex) or porous polymers
containing .simeq.12% fullerene. The polystyrene divinylbenzene C60/70H
column had greater capacity than the Si-NH-C60/70H column. Toluene and PAH
were retained in the order of increasing ring number; nitro-substituents
increased retention and chlorinated dibenzo-p-dioxins and -dibenzofurans
were more strongly retained than their parent compounds. PCB congeners with
no chlorine in the 2,2'-positions were strongly retained; retention
increased with higher chlorination. Except for the fullerenes, surface
interactions with compounds were largely suppressed with chloromethane as
the mobile phase.
Chemical Substance(s):fullerenes; toluene (108-88-3); hydrocarbons,
polycyclic aromatic; biphenyl derivatives, chloro-; organic compounds
End of record 39
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 Record 40 of 92 for NITRO AND PAH                         Go to record 41

1023942
Title:Organic compounds in the flue gas from a power station with
circulating fluid bed combustion of coal.
Author:Wienecke, J.; Kruse, H.; Wassermann, O.
Author Affiliation:Dept. Toxicol., Christian-Albrecht Univ., 2300 Kiel,
Germany
Journal:Chemosphere   Vol25   Iss12   Pg1889-1895
Publication Date:Dec 1992
CODEN:CMSHAF   ISSN:0045-6535
Language:English
Document Type:Journal
Abstract:Samples of flue gas were collected from the fluid bed combustion
of South African, Polish, Ruhr and Spitsbergen coals at .simeq.850.degree.
in the presence of 3.5 to 4.0% of free O. The gases were trapped in nonane,
and 1,3,5-triphenylbenzene was added as internal standard. Analysis was by
GC - 70-eV EIMS on a fused-silica column (60 m .times. 0.25 .mu.m) of DB-5
(0.25 .mu.m), temp. programmed from 60.degree. (held for 3 min) to
260.degree. at 10.degree. min.minus.1 and with He as carrier gas.
Hydrocarbons, phthalate esters, methylnaphthalene and dichlorobenzoyl
chloride were identified by comparison of the retention times with those of
reference compounds. Polyhalogenated compounds, PAH, heterocycles,
nitro-compounds and naphthaquinone were also identified in this way, as
well as by selected-ion monitoring and from examination of the molecular
ion peak. External standards were used for quantitation. Levels of the
various compounds found in each type of coal are reported, and a possible
combustion reaction pathway leading to PAH and to organic chloro-compounds
is suggested.
Chemical Substance(s):organic compounds; waste gases
End of record 40
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 Record 41 of 92 for NITRO AND PAH                         Go to record 42

1022833
Title:Supercritical-fluid extraction of nitrated polycyclic aromatic
hydrocarbons and polycyclic aromatic hydrocarbons from diesel-exhaust
particulate matter.
Author:Paschke, T.; Hawthorne, S. B.; Miller, D. J.; Wenclawiak, B.
Author Affiliation:Energy and Environ. Res. Center, Univ. North Dakota,
Grand Forks, ND 58202, USA
Journal:J. Chromatogr.   Vol609   Iss1-2   Pg333-340
Publication Date:18 Sep 1992
CODEN:JOCRAM   ISSN:0021-9673
Language:English
Document Type:Journal
Abstract:The compounds were extracted into supercritical CO2, CHClF2, and
CO2 with added modifiers, and the extracts were analysed on a column (25 m
.times. 0.32 mm) coated with HP-5 (0.17 .mu.m) and operated with temp.
programming from 60.degree. to 330.degree. at 8.degree. min.minus.1;
detection was by FID or MS with H and He as respective carrier gases. The
CHClF2 at 100.degree. and 400 atm yielded the highest recoveries of both
PAH and nitro-PAH from such particulates.
Chemical Substance(s):hydrocarbons, polycyclic aromatic; nitro-compounds,
polycyclic aromatic; exhaust gases, diesel-engine
End of record 41
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 Record 42 of 92 for NITRO AND PAH                         Go to record 43

1021934
Title:Critical aspects of sampling and analysis of atmospheric pollutants.
Author:Person, A.
Author Affiliation:Lab. Hyg. Paris, 75013 Paris, France
Journal:Analusis   Vol20   IssSuppl. 7   PgS3
Publication Date:Sep 1992
CODEN:ANLSCY   ISSN:0365-4877
Language:French
Document Type:Journal
Abstract:Some of the problems associated with the determination of trace
amounts of a large number of possible atmospheric pollutants, e.g.,
volatile organic compounds such as aldehydes and nitro PAH, in
non-industrial environments are discussed. The use of non-specific and
dedicated automatic analysers to alleviate such problems is discussed
briefly.
Chemical Substance(s):pollutants; air
End of record 42
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 Record 43 of 92 for NITRO AND PAH                         Go to record 44

1021885
Title:Competitive ELISA for the metabolites of nitrated polycyclic aromatic
hydrocarbons.
Author:Scheepers, P. T. J.; Beenakkers, M. F. M.; Bos, R. P.
Author Affiliation:Toxicol. Dept., Univ. Nijmegen, 6500 HB Nijmegen,
Netherlands
Conference Information:Presented at the 13th International Conference on
Biochemical Analysis held in Munich, Germany, May 5-8, 1992
Journal:Fresenius' J. Anal. Chem.   Vol343   Iss1   Pg169-170
Publication Date:May 1992
CODEN:FJACES   ISSN:0937-0633
Language:English
Document Type:Journal
Abstract:The PAH and nitro-PAH were isolated from urine on Sep-Pak C18
cartridges and the methanol eluate was analysed by competitive ELISA as
described by Gomez and Santella (Chem. Res. Toxicol., 1990, 3, 307).
Benzo(a)pyren-6-amine bound to bovine serum albumin was used to coat the
plates, the antibody 4D5 was used, and the second antibody was rabbit
anti-mouse IgG conjugated to alkaline phosphatase; 50% inhibition of
binding was shown by 1 nmol of the metabolites.
Chemical Substance(s):nitro-compounds, polycyclic aromatic; urine
End of record 43
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 Record 44 of 92 for NITRO AND PAH                         Go to record 45

1021128
Title:Use of FTMS (Fourier transform mass spectrometry) laser microprobe
for the in situ characterization of nitro-PAHs on particles.
Author:Delmas, S.; Muller, J. F.
Author Affiliation:Lab. Spectrom. Masse et Chim. Laser, IPEM, 57070 Metz,
France
Journal:Analusis   Vol20   Iss3   Pg165-170
Publication Date:Mar 1992
CODEN:ANLSCY   ISSN:0365-4877
Language:English
Document Type:Journal
Abstract:Activated charcoal or silica particles were coated with each of 6
different PAH in cyclohexane soln. (1,000 ppm). The particles were then
exposed to atmospheres containing 1 to 10 ppm of NO2, together with gaseous
HNO3 (to ensure reaction). The treated samples were analysed by the cited
technique with Ar - F ionization at 193 nm. Alternatively, PAH were
extracted and the extracts were analysed by GC on a CP Sil 5 CB column (25
m .times. 0.25 mm), with temp.-programming from 20.degree. to 315.degree.
(details given) and FID. Results by FTMS were superior. Reaction mechanisms
are also discussed.
Chemical Substance(s):nitro-compounds, polycyclic aromatic; atmosphere
End of record 44
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 Record 45 of 92 for NITRO AND PAH                         Go to record 46

1021125
Title:Input, monitoring and evaluation of carcinogenic environmental stress
of polycyclic aromatic hydrocarbons.
Author:Grimmer, G.
Author Affiliation:Biochem. Inst. Umweltcarcinogene, W-2070 Grosshansdorf,
Germany
Journal:GIT Fachz. Lab.   Vol36   Iss1   Pg12-14, 16-18, 20, 21
Publication Date:Jan 1992
CODEN:GITEAR   ISSN:0016-3538
Language:German
Document Type:Journal
Abstract:A procedure is given for fractionating air or exhaust gas
condensates or extracts of particulates into seven sub-classes, viz., PAH
with up to 3 rings, PAH with more than 3 rings, PAH containing S, nitro-
and phenolic derivatives of PAH, aza-arenes and aromatic amines. These
sub-classes are then separated by high-resolution GLC or HPLC (cf. "Anal.
Chem. of Polycyclic Aromatic Compounds", Lee (Ed.), Academic Press, New
York, 1981), with specific detectors where appropriate. Suitable internal
standards are indeno(1,2,3-cd)-fluoranthrene and deuterated phenanthrene.
Urinary excretions of the phenolic metabolites of PAH are used as an index
of exposure of workers to PAH. Tests of the carcinogenic effects of these
compounds are described.
Chemical Substance(s):hydrocarbons, polycyclic aromatic; atmosphere; air;
airborne particulates
End of record 45
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 Record 46 of 92 for NITRO AND PAH                         Go to record 47

1021005
Title:Determination of 3-nitrofluoranthene and 1-nitropyrene in suspended
particulate matter by liquid chromatography with fluorescence detection.
Author:Kamiura, T.; Kawaraya, T.; Tanaka, M.; Nakadoi, T.
Author Affiliation:Dept. Environ. Res., Osaka City Inst. Public Health and
Environ. Sci., Osaka 543, Japan
Journal:Anal. Chim. Acta   Vol254   Iss1-2   Pg27-31
Publication Date:20 Nov 1991
CODEN:ACACAM   ISSN:0003-2670
Language:English
Document Type:Journal
Abstract:Samples were soxhlet extracted with CH2Cl2 (I), passed through a
Sep-Pak column and the nitro-PAH were eluted with I. The residue after
evaporation was dissolved in 30% I in hexane and separated on a column
(23cm .times. 10mm) of silica gel, the nitro-PAH being eluted with benzene
and then reduced to amine by heating with aq. NaHS. The reaction mixture
was analysed on a column (25 cm .times. 4.5mm) of Zorbax ODS with aq. 60%
methanol for 10 min, methanol - phosphate buffer (pH6.86) - H20 (66:5:29)
for 30 min and methanol for 20 min at 0.9 ml min.minus.1, with detection at
502 nm (excitation at 392 nm). The calibration graphs were rectilinear from
0.06 to 1.2 ng of nitro-PAH, with limits of detection of 67 and 81 pg for
3-nitrofluoranthene (I) and 1-nitropyrene (II), respectively. Coefficients
of variation (n=10) were 3.4 and 3.9% for 1.2 ng of I and II, respectively.
Chemical Substance(s):fluoranthene, 3-nitro- (892-21-7); pyrene, 1-nitro-
(5522-43-0); environmental materials
End of record 46
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 Record 47 of 92 for NITRO AND PAH                         Go to record 48

3026699
Title:Nitro group orientation, reduction potential and direct-acting
mutagenicity of nitro-polycyclic aromatic hydrocarbons
Author:Jung, H.; Shaikh, A. U.; Heflich, R. H.; Fu, P. P.
Author Affiliation:Genetic Toxicol. Div, Natl. Center Toxicol. Res, HFT-12
NCTR., Jefferson, AR 72079, USA
Journal:Environ. Mol. Mutagen   Vol17   Iss3   Pg169-180
Publication Date:1991
Language:English
Document Type:Journal
Abstract:A series of structurally-related nitro-polycyclic aromatic
hydrocarbons (nitro-PAHs) was used to determine whether the orientation of
the nitro group and the first half-wave potential (E1/2) were correlated
with direct-acting mutagenicity. A nitro-PAH with its nitro substituent in
a perpendicular orientation exhibits either very weak or no mutagenicity in
Salmonella typhimurium TA98 and TA100. However, if such a compound has a
low E1/2 it may be direct acting. A positive correlation between E1/2 and
direct-acting mutagenicity is found only when the compounds are
structurally similar. Thus, correlation cannot be made for nitro-PAHs of
different molecular size
Chemical Substance(s):hydrocarbons polycyclic aromatic
End of record 47
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 Record 48 of 92 for NITRO AND PAH                         Go to record 49

2023135
Title:Polycyclic aromatic hydrocarbons and their derivatives in indoor and
outdoor air in an eight-home study
Author:Chuang, J.C.; Mack, G.A.; Kuhlman, M.R.; Wilson, N.K.
Author Affiliation:Battelle, U.S. Environmental Protection Agency,
Columbus; Res. Triangle Park, USA; USA
Journal:ATMOSPHERIC ENVIRONMENT (OXFORD)   Vol25B   Iss3   Pg369-380
Publication Date:1991
CODEN:ATENBP   ISSN:00046981
Language:English
Document Type:Journal
Abstract:An eight-home pilot study was conducted to analyze indoor and
outdoor concentrations of 15 polycyclic aromatic hydrocarbons (PAH), five
nitro-PAH, five oxygenated PAH and three nitrogen heterocyclic compounds by
gas chromatography-mass spectrometry. In addition the performance of a
newly devloped indoor sampler in indoor air sampling of particles and
semivolatile organic compounds (SVOC) was evaluated. Naphtalene was the
most abundant PAH found in indoor air. The indoor concentrations of PAH
derivatives were lower than those of their parent compounds. Average
concentrations of all but three target compounds were higher indoors than
outdoors. Environmental tobacco smoke was found to be a significant
contributor to indoor pollutant levels. A correlation was observed among
the PAH marker compounds (phenanthrene, fluoranthene and pyrene) and other
target compounds. (Stock)
End of record 48
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 Record 49 of 92 for NITRO AND PAH                         Go to record 50

1021320
Title:The Handbook of Environmental Chemistry. Vol. 3. Part G.
Anthropogenic Compounds.
Author:Hutzinger, O.
Publisher:Springer-Verlag   Publisher Address:Heidelberg, Germany   Pg248
Publication Date:1991   ISBN:3-540-53198-X
Language:English
Document Type:Book
Abstract:DM 168.00. Four groups of anthropogenic compounds are discussed:
(i) isocyanates, (ii) nitro-derivatives of PAH, (iii) chlorinated ethanes
and (iv) organic explosives and related compounds; the role of these
compounds in the environment are described.
End of record 49
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 Record 50 of 92 for NITRO AND PAH                         Go to record 51

1018515
Title:Nitro-PAH formation in atmosphere: gaseous and particulate phases.
Analytical method.
Author:Wortham, H. M.; Masclet, P. A.; Mouvier, G.
Author Affiliation:Lab. Phys. Chim. Atmos., Univ. Paris VII, 75251 Paris,
France
Journal:Analusis   Vol18   Iss9   Pg536-543
Publication Date:Nov 1990
CODEN:ANLSCY   ISSN:0365-4877
Language:French
Document Type:Journal
Abstract:Samples were collected by pumping air through a glass-fibre or
PTFE filter (to collect particulates) and through a solid adsorbent trap
(to collect gases) for about 100 h. After Soxhlet or ultrasonic extraction,
the samples, containing PAH, nitro-PAH, quinones and aza-arenes, were
separated by HPLC on a semi-preparative column of normal-phase silica. The
nitro-PAH fraction was analysed by reversed-phase HPLC on a column of
LiChrospher (5 .mu.m), with gradient elution (0.95 ml min.minus.1) from 75
to 95% of methanol in H2O over 25 min, and fluorimetric detection at 400,
430 and 530 nm (excitation at 313, 360 and 366 nm, respectively).
Chemical Substance(s):nitro-compounds, polycyclic aromatic; air; airborne
particulates
End of record 50
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 Record 51 of 92 for NITRO AND PAH                         Go to record 52

1017837
Title:Effect of temperature and organic modifier on the isocratic retention
characteristics of nitrated polycyclic aromatic hydrocarbons on a
reversed-phase octadecylsilane column.
Author:Robbat, A., jun.; Liu, T.-Y.
Author Affiliation:Trace Anal. Measure. Lab., Chem. Dept., Tufts Univ.,
Medford, MA 02155, USA
Journal:J. Chromatogr.   Vol513   Pg117-135
Publication Date:27 Jul 1990
CODEN:JOCRAM   ISSN:0021-9673
Language:English
Document Type:Journal
Abstract:The cited effects were studied with use of a column (25 cm .times.
2.1 mm) of polymeric octadecylsilane (5 .mu.m) and various mobile phases of
aq. methanol or aq. acetonitrile and temp. 35.degree., 45.degree.,
55.degree. and 65.degree.. Capacity factors (k') for nitro-PAH increased
with decreasing concn. of organic modifier with rectilinear relationship
between log k' and the vol. fraction of organic modifier, with steeper
graph slopes for methanol than acetonitrile and solpes dependent upon
solute species. Thirty-four nitro-PAH were identified and characterized and
extensive tables are presented.
Chemical Substance(s):nitro-compounds, polycyclic aromatic
End of record 51
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 Record 52 of 92 for NITRO AND PAH                         Go to record 53

2018153
Title:Determination of optimal storage conditions for particle samples
Author:Sverdrup, G.M.; Buxton, B.E.; Chuang, J.C.; Casuccio, G.S.
Author Affiliation:Battelle, R.J. Lee Group, Columbus; Monroeville, USA;
USA
Journal:Environmental Science and Technology   Vol24   Iss8   Pg1186-1195
Publication Date:1990
CODEN:ESTHAG   ISSN:0013-936
Language:English
Document Type:Journal
Abstract:Surrogate samples for power plant plume fly ash were mixed with
three polycyclic aromatic hydrocarbons (PAH), one nitro-PAH, salt, and
sulfuric acid and the stability of the PAH in the fly ash samples was
investigated. Samples were stored for 30 and 120 days at either -79 Cel or
20 Cel under a set of variable conditions of temperature, light and
humidity. Elemental composition, morphology and particle size distributions
were determined by computer-controlled scanning electron microscopy as well
as gas chromatographymass spectrometry. Preservation of organic compounds
was best achieved when the samples were packaged in Teflon-wrapped
glass-dishes. Particle agglomeration was observed in some samples. Storage
at -79 Cel in the dark was found to be the optimal storage condition to
preserve samples for at least a few months. (Stock)
End of record 52
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 Record 53 of 92 for NITRO AND PAH                         Go to record 54

1016253
Title:Determination of polynuclear aromatic hydrocarbons and mono-nitrated
derivatives in air and diesel particulates.
Author:Niles, R.; Tan, Y. L.
Author Affiliation:Environ. Measure. Lab., US Dept. Energy, New York, NY
10014-3621, USA
Journal:Anal. Chim. Acta   Vol221   Iss1   Pg53-63
Publication Date:1 Jun 1989
CODEN:ACACAM   ISSN:0003-2670
Language:English
Document Type:Journal
Abstract:PAH and nitro-PAH were separated from long-chain aliphatics in
extracts of particulates by gel filtration on a column (40 cm .times. 1.9
cm) of Sephadex LH-20 with a mobile phase of methanol - CH2Cl2 (1:1). The
first 78 ml of eluate was discarded, the next 25 ml was evaporated to
dryness and the residue was dissolved in THF - hexane (1:1). The soln.
(0.25 ml) was fractionated by semi-preparative LC on a column (30 cm
.times. 7.8 mm) of .mu.Bondapak-NH2 with a guard column (1 cm .times. 4 mm)
of Adsorbosphere-NH2 and gradient elution (2 ml min.minus.1) from 0% (held
for 1 min) to 30% (held for 13 min) of CH2Cl2 in hexane at 5% min.minus.1.
Fractions from 11 to 15.8 min (containing 3 and 4-ring PAH) and from 15.8
to 19 min (containing 5 and 6-ring PAH and 3 to 5-ring nitro-PAH) were
evaporated to dryness and the residues were dissolved in CH2Cl2.
Determination was by GC on a fused-silica column (30 m .times. 0.25 mm) of
DB-5 (0.25 .mu.m) temp. programmed from 65.degree. to 150.degree. at
32.degree. min.minus.1 and then to 280.degree. at 4.degree. min.minus.1
(held for 30 min), with FID for PAH measurement, a Model 610 TEA nitrogen
analyser for nitro-PAH measurement and MS for identification. A table is
given of 41 identified species, with determination of 24 of these in diesel
and urban airborne particulates.
Chemical Substance(s):hydrocarbons, polycyclic aromatic; nitro-compounds,
polycyclic aromatic; airborne particulates; diesel fuel
End of record 53
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 Record 54 of 92 for NITRO AND PAH                         Go to record 55

1015331
Title:Utilization of certified reference materials in monitoring common
environmental pollutants (PAH, nitro-PAH, PCB).
Author:Lindsey, A. S.; Belliardo, J. J.; Wagstaffe, P. J.
Author Affiliation:Project Alpha, Leatherhead, Surrey, KT23 3NX, UK
Journal:Fresenius' Z. Anal. Chem.   Vol333   Iss6   Pg599-606
Publication Date:Mar 1989
CODEN:ZACFAU   ISSN:0016-1152
Language:English
Document Type:Journal
Abstract:A review is presented, with 83 references.
Chemical Substance(s):hydrocarbons, polycyclic aromatic; nitro-compounds,
polycyclic aromatic; biphenyl derivatives, chloro-
End of record 54
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 Record 55 of 92 for NITRO AND PAH                         Go to record 56

1015162
Title:Analysis of polycyclic aromatic hydrocarbons in the environment by
high-performance liquid chromatography with chemiluminescence and
fluorescence detection.
Author:Imaizumi, N.; Hayakawa, K.; Miyazaki, M.
Author Affiliation:Fac. Pharm. Sci., Kanazawa Univ., Kanazawa, Japan
Conference Information:Presented at the 14th Symposium on Environmental
Pollutants and Toxicology, Kumamoto, Japan, November 10-11, 1988
Journal:Eisei Kagaku   Vol35   Iss1   PgP4
Publication Date:Feb 1989
CODEN:ESKGA2   ISSN:0013-273X
Language:English
Document Type:Journal
Abstract:Soot from diesel or gasoline car exhaust was extracted with
benzene - ethanol (3:1), and the extract was cleaned up on a Sep-Pak
alumina cartridge. Nitro-PAH were determined after reduction with Zn - HCl.
HPLC was carried out on Brownlee RP-18 or Vydac 201 TP54 with imidazole
buffer soln. in HClO4 (pH 7.0) - acetonitrile (1:9 for PAH, 1:4 for
nitro-PAH; final concn. of imidazole 1mM) as mobile phase (1 ml
min.minus.1) and fluorimetric or chemiluminescence detection. For
chemiluminescence detection, the reagent used was
0.5mM-bis-(2,4,6-trichlorophenyl)oxalate - 0.15M-H2O2 (1 ml min.minus.1).
The detection limits for nitropyrene by chemiluminescence and fluorescence
were 2 and 40 fmol, respectively.
Chemical Substance(s):hydrocarbons, polycyclic aromatic; nitro-compounds,
polycyclic aromatic; soot
End of record 55
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 Record 56 of 92 for NITRO AND PAH                         Go to record 57

1014838
Title:High-performance liquid-chromatographic separation of ring-oxidized
metabolites of nitro-polycyclic aromatic hydrocarbons.
Author:Von Tungeln, L. S.; Fu, P. P.
Author Affiliation:Natl. Center Toxicol. Res., Food and Drug Admin.,
Jefferson, AR 72079, USA
Conference Information:Presented at the 12th International Symposium on
Column Liquid Chromatography, held in Washington, DC, June 19-24, 1988
Journal:J. Chromatogr.   Vol461   Pg315-326
Publication Date:6 Jan 1989
CODEN:JOCRAM   ISSN:0021-9673
Language:English
Document Type:Journal
Abstract:The separation of such compounds was studied on several stationary
phases. Columns (25 cm .times. 4.6 mm) of Zorbax ODS and Vydac ODS (5
.mu.m) gave good separations with methanol - H2O (19:1) as mobile phase
(0.5 ml min.minus.1) and detection at 254 nm. The general order of elution
was parent nitro-PAH, phenolic derivatives, epoxides, dihydrodiols, and
tetrahydrotetrols.
Chemical Substance(s):nitro-compounds, polycyclic aromatic
End of record 56
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 Record 57 of 92 for NITRO AND PAH                         Go to record 58

1014641
Title:Standard reference materials for the determination of polycyclic
aromatic hydrocarbons.
Author:Wise, S. A.; Hilpert, L. R.; Rebbert, R. E.; Sander, L. C.; Schantz,
M. M.; Chesler, S. N.; May, W. E.
Author Affiliation:Org. Anal. Res. Div., Center Anal. Chem., Natl. Bur.
Stand., Gaithersburg, MD 20899, USA
Conference Information:Presented at the Third International Symposium on
Biological Reference Materials, held in Bayreuth, W. Germany, May 4-7, 1988
Journal:Fresenius' Z. Anal. Chem.   Vol332   Iss6   Pg573-582
Publication Date:Dec 1988
CODEN:ZACFAU   ISSN:0016-1152
Language:English
Document Type:Journal
Abstract:The NBS standard reference materials (SRM) for use in the
determination of PAH and nitro-PAH are listed, as well as the analytical
techiques, including GC, LC, GC - MS and gravimetry, used for their
certification. The concn. of the individual PAH determined in the natural
matrix SRM are summarized and compared; three recently introduced SRM
(1647a-priority pollutant PAH in acetonitrile, 1491-aromatic hydrocarbons
in hexane - toluene, and 1597-complex mixture of PAH from coal tar) are
described in detail.
Chemical Substance(s):hydrocarbons, polycyclic aromatic; environmental
materials
End of record 57
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 Record 58 of 92 for NITRO AND PAH                         Go to record 59

1013871
Title:Detection of hydroxylated nitro-aromatic and hydroxylated
nitro-polycyclic aromatic compounds in an ambient-air particulate extract
using bioassay-directed fractionation.
Author:Nishioka, M. G.; Howard, C. C.; Contos, D. A.; Ball, L. M.; Lewtas,
J.
Author Affiliation:Columbus Div., Battelle, Columbus, OH 43201-2693, USA
Journal:Environ. Sci. Technol.   Vol22   Iss8   Pg908-915
Publication Date:Aug 1988
CODEN:ESTHAG   ISSN:0013-936X
Language:English
Document Type:Journal
Abstract:Airborne particulates were extracted with CH2Cl2 (2 .times. 300
ml) and methanol (300 ml) and the combined CH2Cl2 extracts were subjected
to acid - base partitioning and open-bed silica gel column chromatography
(with (i) hexane, (ii) hexane - benzene, (iii) CH2Cl2, (iv) methanol and
(v) acidic methanol). The CH2Cl2 and organic acid fractions were
fractionated by HPLC on a column (25 cm .times. 4.6 mm) of Zorbax SiO2,
with linear gradient elution involving methanol - CH2Cl2 (1:49) in hexane
(details given) and detection at 254 nm. The third subfraction eluted was
analysed for hydroxylated nitro-PAH and nitro-polycyclic aromatic ketones
by GC - MS in both the negative CI and EI modes (full details given). The
CH2Cl2 fraction was also separated further by HPLC as before but with
linear gradient elution with CH2Cl2 in hexane. The fraction eluted after 9
to 15 min was analysed as before. Several mutagenic hydroxylated nitro-PAH
were detected.
Chemical Substance(s):nitro-compounds, polycyclic aromatic; ketones,
polycyclic aromatic, nitro-; airborne particulates
End of record 58
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 Record 59 of 92 for NITRO AND PAH                         Go to record 60

1013865
Title:Analysis of diesel particulate.
Author:Levsen, K.
Author Affiliation:Fraunhofer Inst. Toxikol. u. Aerosolforschung, 3000
Hannover, W. Germany
Journal:Fresenius' Z. Anal. Chem.   Vol331   Iss5   Pg467-478
Publication Date:Jul 1988
CODEN:ZACFAU   ISSN:0016-1152
Language:English
Document Type:Journal
Abstract:A review is presented, with 184 references. Topics covered include
sampling, both directly and under simulated road conditions, and analysis
for PAH, nitro-PAH and oxy-PAH.
Chemical Substance(s):exhaust gases, diesel-engine; airborne particulates
End of record 59
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 Record 60 of 92 for NITRO AND PAH                         Go to record 61

1013530
Title:Short capillary column for the separation and identification of
mononitrofluoranthene and mononitropyrene isomers present in air and
emission samples.
Author:Ciccioli, P.; Cecinato, A.; Brancaleoni, E.; Liberti, A.
Author Affiliation:Ist. Inquin. Atmos., CNR, 00016 Monterotondo Stazione,
Rome, Italy
Journal:HRC CC, J. High Resolut. Chromatogr. Chromatogr. Commun.   Vol11
Iss4   Pg306-312
Publication Date:Apr 1988
CODEN:HCJCDB   ISSN:0344-7138
Language:English
Document Type:Journal
Abstract:The isomers of mononitrofluoranthene and of mononitropyrene were
separated by GC - MS on a column (15 m .times. 0.25 mm) coated with 0.5
.mu.m of DB-17. On-column injection at 30.degree. was followed by temp.
programming at 20.degree. min.minus.1 to 200.degree. (held for 3 min) and
then at 3.degree. min.minus.1 to 270.degree.. The method was applied in the
analysis of particulates collected from work-place air (at a carbon
electrodes factory) and from roadside air heavily contaminated with exhaust
emissions. The identification (by retention time) and determination of the
cited nitro-PAH isomers is illustrated.
Chemical Substance(s):fluoranthene, nitro- (77468-36-1); pyrene, nitro-
(63021-86-3); air
End of record 60
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 Record 61 of 92 for NITRO AND PAH                         Go to record 62

1013415
Title:Organics in water: solid-phase extraction on a small scale.
Author:Junk, G. A.; Richard, J. J.
Author Affiliation:Ames Lab. (USDOE), Iowa State Univ., Ames IA 50011, USA
Journal:Anal. Chem.   Vol60   Iss5   Pg451-454
Publication Date:1 Mar 1988
CODEN:ANCHAM   ISSN:0003-2700
Language:English
Document Type:Journal
Abstract:Cartridges (J. T. Baker) containing 100 mg of C18 bonded porous
silica (40 .mu.m) were used for the extraction of pesticides and polycyclic
organic materials from 1 to 100-ml samples of water at flow rates of up to
250 bed-vol. min-1. The silica was air-dried and the adsorbed compounds
were eluted with ethyl acetate or benzene. About 60 to 100 .mu.l of eluate
was collected for GC analysis. Recoveries were >85%, and detection limits
were 0.1 ng ml-1 for pesticides and nitro-PAH and 10 ng ml-1 for PAH. The
method was used for the analysis of environmental waters.
Chemical Substance(s):pesticides; hydrocarbons, polycyclic aromatic;
nitro-compounds, polycyclic aromatic; waters, natural
End of record 61
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 Record 62 of 92 for NITRO AND PAH                         Go to record 63

1013381
Title:Determination of nitro polynuclear aromatic hydrocarbons in air and
diesel particulate matter using liquid chromatography with electrochemical
and fluorescence detection.
Author:MacCrehan, W. A.; May, W. E.; Yang, S. D.; Benner, B. A., jun.
Author Affiliation:Org. Anal. Res. Div., Center Anal. Chem., Natl. Bur.
Stand., Gaithersburg, MD 20899, USA
Journal:Anal. Chem.   Vol60   Iss3   Pg194-199
Publication Date:1 Feb 1988
CODEN:ANCHAM   ISSN:0003-2700
Language:English
Document Type:Journal
Abstract:Air and diesel particulate samples were extracted with CH2Cl2 in a
Soxhlet apparatus or with ultrasonication. The nitro-PAH derivatives in the
extract were separated on a column (25 cm .times. 4.6 mm) of Zorbax ODS,
with gradient elution with different solvent systems (details given)
according to the mode of detection. Detection was by: (i) differential
pulse voltammetry; (ii) amperometry with an applied potential of -0.50 V
(both with a Au - Hg electrode); and (iii) fluorimetry after online
reduction by Zn - SiO2 (1:1). Oxygen was removed from the mobile phase by a
Pt - Al2O3 scrubber column (15 cm .times. 4.6 mm). Results obtained by all
methods agreed well. Detection limits ranged from 2.6 to 8.0 ng for method
(i), 24 to 96 pg for (ii) and 8 to 34 pg for (iii).
Chemical Substance(s):nitro-compounds, polycyclic aromatic; airborne
particulates; diesel fuel
End of record 62
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 Record 63 of 92 for NITRO AND PAH                         Go to record 64

2014868
Title:The analysis of diesel particulate
Author:Levsen, K.
Author Affiliation:Fraunhofer-Inst. f. Toxikologie u. Aerosolforschg.,
Hannover, Fed. Rep. Germany
Journal:Fresenius. Zeitschrift fuer Analytische Chemie, Labor und
Betriebsverfahren   Vol331   Iss5   Pg467-478
Publication Date:1988
CODEN:ZACFAU   ISSN:0016-115
Language:English
Document Type:Journal
Abstract:Methods developed for the analysis of the organic compounds
adsorbed on diesel particulate are reviewed with special emphasis on the
determination of polycyclic aromatic hydrocarbons (PAH), nitro PAH and oxy
PAH. (Author)
End of record 63
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 Record 64 of 92 for NITRO AND PAH                         Go to record 65

1012602
Title:Application of multi-dimensional gas chromatography to analysis for
nitrated polycyclic aromatic hydrocarbons in airborne particulate matter.
Author:Kopczynski, S. L.
Author Affiliation:Environ. Monit. Systems Lab., US Environ. Prot. Agency,
Research Triangle Park, NC 27711, USA
Journal:Int. J. Environ. Anal. Chem.   Vol30   Iss1-2   Pg1-13
Publication Date:Jun 1987
CODEN:IJEAA3   ISSN:0306-7319
Language:English
Document Type:Journal
Abstract:A particulate sample and internal standard (3-nitrofluoranthene)
were extracted with toluene - CH2Cl2 (3:1). The mixture was centrifuged and
the supernatant soln. was filtered. The filtrate was cleaned up on a column
(10 cm .times. 6 mm) of Florisil (toluene as eluent for PAH and nitro-PAH).
The eluate was filtered through PTFE and conc. for analysis by GC on a
SiCHROMAT 2 system (Siemens) with an SPB-35 fused-silica column (15 m
.times. 0.32 mm) and a DB-5 column (20 m .times. 0.32 mm) in series.
Heart-cuts taken from the front column (equipped with its own FID) were
focused on the back column, which was equipped with a FID and a N-selective
detector in parallel. 1-Nitropyrene (I) was unambiguously identified and
its detection limit was 36 pg. Recovery of I from NBS diesel particulate
SRM 1650 was 95%.
Chemical Substance(s):nitro-compounds, polycyclic aromatic; airborne
particulates
End of record 64
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 Record 65 of 92 for NITRO AND PAH                         Go to record 66

1011588
Title:Selective and sensitive analysis of nitro-PAH.
Author:Sellstrom, U.; Jansson, B.; Bergman, A.; Alsberg, T.
Author Affiliation:Dept. Anal. Chem., Univ. Stockholm, 106 91 Stockholm,
Sweden
Journal:Chemosphere   Vol16   Iss5   Pg945-952
Publication Date:1987
CODEN:CMSHAF   ISSN:0045-6535
Language:English
Document Type:Journal
Abstract:Nitro-containing PAH were reduced to the corresponding
amino-compounds and derivatized with heptafluorobutyric anhydride. The
products obtained were determined by GC - MS with use of a column (25 m
.times. 0.32 mm) coated with 0.25 .mu.m of DB-5 and negative-ion
chemical-ionization MS (Finnigan 4021 quadrupole instrument). Details are
given of a multi-stage cleanup and fractionation procedure that was used
for the analysis of an exhaust emission sample from a diesel car engine.
Over ninety nitro-PAH were detected in the particulates from this sample.
Chemical Substance(s):hydrocarbons, polycyclic aromatic; exhaust gases,
diesel-engine; exhaust gases, car-
End of record 65
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 Record 66 of 92 for NITRO AND PAH                         Go to record 67

1012099
Title:Very-high-volume aerosol sampling with a novel drum centrifuge.
Author:Hollaender, W.; Morawietz, G.; Pohlmann, G.; Wolter, H.; Gallily,
I.; Cohen, A. H.
Author Affiliation:Fraunhofer Inst. Toxicol and Aerosol Res., 3000 Hannover
61, W. Germany
Journal:Aerosol Sci. Technol.   Vol7   Iss1   Pg67-77
Publication Date:1987
CODEN:ASTYDQ   ISSN:0278-6826
Language:English
Document Type:Journal
Abstract:A drum centrifuge suitable for very-high-vol. aerosol sampling,
e.g., for analysis of trace compounds, is described and illustrated. The
operating principle of the apparatus is based on particle deposition on the
inner surface of a porous rotating drum. A pressure gradient draws air into
the bore of the axis and then radially outward through a number of holes
into the drum. Particles are deposited on two metal sheets which are
perforated by rows of slits, such that the slits in the inner and outer
sheets are displaced. The system is equipped with an ultrasonic bath for
subsequent extraction of particles. Calculated deposition efficiencies
agreed satisfactorily with experimental results. The device has been
applied in sampling of nitro-PAH.
Chemical Substance(s):organic compounds; airborne particulates
End of record 66
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 Record 67 of 92 for NITRO AND PAH                         Go to record 68

1010693
Title:Gas-chromatographic chemiluminescent detection and evaluation of
predictive models for identifying nitrated polycyclic aromatic hydrocarbons
in a diesel fuel particulate extract.
Author:Robbat, A., jun.; Corso, N. P.; Doherty, P. J.; Wolf, M. H.
Author Affiliation:Chem. Dept., Tufts Univ., Medford, MA 02155, USA
Journal:Anal. Chem.   Vol58   Iss9   Pg2078-2084
Publication Date:Aug 1986
CODEN:ANCHAM   ISSN:0003-2700
Language:English
Document Type:Journal
Abstract:A chemiluminescent detector consisting of a pyrolysis chamber
(1000.degree.), a cold trap, and a reaction chamber where the nitrosyl
radicals reacted with ozone to produce IR chemiluminescence (which was
detected by a photomultiplier tube) was interfaced to a gas chromatograph
equipped with a column (25 m .times. 0.31 mm) coated with SE-52 (0.25
.mu.m) with He (2 ml min-1) as carrier gas and temp.-programming from
35.degree. to 305.degree. at 10.degree. min-1. The retention indexes of 51
compounds were evaluated. A rectilinear response was obtained for most
nitro-PAH up to 100 ng with a detection limit of 50 pg. The selectivity of
the chemiluminescent detector towards nitro-PAH was compared with that of
FID, electron-impact MS and negative-ion chemical-ionization MS, and was
shown to be better when applied to the analysis of a diesel fuel
particulate extract. Equations obtained by relating chromatographic
retention index and molecular connectivity were also used for peak
identification.
Chemical Substance(s):nitro-compounds, polycyclic aromatic; exhaust gases,
diesel-engine
End of record 67
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 Record 68 of 92 for NITRO AND PAH                         Go to record 69

1010520
Title:Fluorescence detection and identification of nitro-derivatives of
polynuclear aromatic hydrocarbons by on-column catalytic reduction to
aromatic amines.
Author:Tejada, S. B.; Zweidinger, R. B.; Sigsby, J. E., jun.
Author Affiliation:Mobile Source Emissions Res. Branch, Atmos. Sci. Res.
Lab., U.S. Environ. Prot. Agency, Research Triangle Park, NC 27711, USA
Journal:Anal. Chem.   Vol58   Iss8   Pg1827-1834
Publication Date:Jul 1986
CODEN:ANCHAM   ISSN:0003-2700
Language:English
Document Type:Journal
Abstract:Particles from the exhaust emission of gasoline- and
diesel-powered engines were collected on PTFE-coated glass-fibre filters.
The filters were extracted with CH2Cl2 and the extract was evaporated to
dryness under N. The residue was dissolved in methanol - CH2Cl2 (1:1) and
the nitro-PAH derivatives were determined by HPLC on a Zorbax ODS column
(25 cm .times. 4.5 mm) with a Whatman ODS guard column (5 cm .times. 2.1
mm) and aq. 75 to 100% methanol at 1% min-1 as mobile phase (1 ml min-1).
The eluate was passed through a catalyst column (5 cm .times. 4.6 mm) of
Spherisorb 5AY alumina (5 .mu.m), at 80.degree., coated with Pt and Rh to
reduce the nitro-PAH derivatives to aromatic amines. Simultaneous UV and
fluorescence detection was used at 254 and 430 nm (excitation at 360 nm),
respectively.
Chemical Substance(s):nitro-compounds, polycyclic aromatic; exhaust gases,
diesel-engine; exhaust gases, car-
End of record 68
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 Record 69 of 92 for NITRO AND PAH                         Go to record 70

1010232
Title:Detection of nitro polynuclear aromatic compounds by surface-enhanced
Raman spectrometry.
Author:Enlow, P. D.; Buncick, M.; Warmack, R. J.; Vo-Dinh, T.
Author Affiliation:Health and Saf. Res. Div., Oak Ridge Natl. Lab., Oak
Ridge, TN 37831, USA
Journal:Anal. Chem.   Vol58   Iss6   Pg1119-1123
Publication Date:May 1986
CODEN:ANCHAM   ISSN:0003-2700
Language:English
Document Type:Journal
Abstract:Various nitro-PAH including 1-nitropyrene (I), 9-nitroanthracene,
2-nitronaphthalene and 2-nitrofluorene were investigated by a
surface-enhanced Raman scattering (SERS) spectrometry technique involving
silver-coated solid substrata consisting of latex spheres on glass or
filter-paper and prolate SiO2 "posts" on silica. The limit of detection
(signal-to-noise ratio of 2) for I was 0.2 ng. The SERS signals were
enhanced over conventional Raman spectra by a factor of 5 .times. 106 to 9
.times. 106 for I adsorbed on various SERS-active substrata. The production
and practicality of these substrata with glass, paper and silica supports
are discussed. A Spex model 1403 double-grating spectrometer equipped with
a gallium arsenide photomultiplier operating in the single-photon counting
mode was used for the measurements plus a Spectra Physics 164 argon ion
laser as a 514.5-nm excitation source. The importance of the technique in
air analysis is stressed.
Chemical Substance(s):nitro-compounds, polycyclic aromatic
End of record 69
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 Record 70 of 92 for NITRO AND PAH                         Go to record 71

1009856
Title:Quantitation of nitro- and dinitro-polycyclic aromatic hydrocarbons
in diesel-exhaust particulate matter.
Author:Draper, W. M.
Author Affiliation:Environ. Health Div., Sch. Public Health, Univ.
Minnesota, Minneapolis, MN 55455, USA
Journal:Chemosphere   Vol15   Iss4   Pg437-447
Publication Date:1986
CODEN:CMSHAF   ISSN:0045-6535
Language:English
Document Type:Journal
Abstract:Diesel-exhaust particulate matter was collected on PTFE-coated
glass-fibre filters, and extracted in a Soxhlet apparatus with CH2Cl2 for
.gtoreq.16 h in the dark. The extract was concentrated and fractionated on
a Sep-Pak cartridge and then by HPLC on a column (30 cm .times. 7.8 mm) of
.mu.Porasil, with a 30 to 40-.mu.m pellicular silica guard column, and a
mobile-phase programme of hexane - CH2Cl2 (99:1) for 10 min, then to 100%
CH2Cl2 over 10 min, then after 20 min returning to the original mixture
over 5 min; the flow rate was maintained at 1.5 ml min-1. Detection was at
254 nm. The nitro-PAH fraction (eluting after .simeq.23 to .simeq.35 min)
was concentrated and analysed by GC on a column (30 m .times. 0.32 mm) of
chemically bonded SPB-5, operated with temp.-programming from 120.degree.
(held for 2 min) at 40.degree. min-1 to 160.degree. (held for 1 min) then
at 3.degree. min-1 to 275.degree. (held for 10 min), a carrier-gas flow
rate of 1.36 ml min-1, and 63Ni ECD. Detection limits were .simeq.2 .mu.g
g-1 for three dinitropyrene isomers, and recoveries were 69 to 85% for 10
.mu.g g-1.
Chemical Substance(s):nitro-compounds, polycyclic aromatic; exhaust gases,
diesel-engine
End of record 70
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 Record 71 of 92 for NITRO AND PAH                         Go to record 72

1008588
Title:Determination of 2-nitrofluoranthene and 2-nitropyrene in ambient
particulate organic matter: evidence for atmospheric reactions.
Author:Pitts, J. N., jun.; Sweetman, J. A.; Zielinska, B.; Winer, A. M.;
Atkinson, R.
Author Affiliation:Statewide Air Pollution Res. Center, Univ. California,
Riverside, CA 92521, USA
Journal:Atmos. Environ.   Vol19   Iss10   Pg1601-1608
Publication Date:Oct 1985
CODEN:ATENBP   ISSN:0004-6981
Language:English
Document Type:Journal
Abstract:Ambient particulate organic matter was collected on two
PTFE-impregnated glass-fibre filters and one silica filter with use of the
ultra-high-volume sampler of Fitz et al. (J. Air Pollut. Control Assoc.,
1983, 33, 877). The filters were subjected to Soxhlet extraction with
CH2Cl2 for 17 h, and the combined extracts were reduced in vol., filtered
through a Millex-SR cartridge (0.5 .mu.m), and dried to constant wt. under
a stream of N. Then the residue was dissolved in methanol, and 9.9 .mu.g of
(2H9)1-nitropyrene and 8.5 .mu.g of a mixture of (2H9)3- and
(2H9)8-nitrofluoranthene were added. This mixture was applied to a column
(15 cm .times. 1.5 cm) of XAD-2 resin, and, after elution of polar material
with 15 ml of pentane followed by 7 ml of ethanol, the nitro-PAH were
eluted with 20 ml of toluene, this fraction then being reduced in vol. and
dried to constant wt. under N. The residue was dissolved in CH2Cl2 and
injected on to an Ultrasphere Si preparative column (25 cm .times. 1 cm)
operated at 3 ml min-1 with u.v. - visible detection; the mobile phase
programme was: hexane - CH2Cl2 (19:1) for 10 min, then a linear gradient to
100% of CH2Cl2 (maintained for 10 min) over 15 min, then a linear gradient
to 100% of acetonitrile over 10 min. Four 2-min fractions were collected
starting at an elution time of 20 min. These fractions, with chrysene added
as internal standard, were analysed by g.c. - m.s. with selected-ion
monitoring on a capillary column (60 m .times. 0.25 mm) coated with DB-5
and operated with temp.-programming from 50.degree. to 200.degree. at
20.degree. min-1, then to 300.degree. at 6.degree. min-1. By monitoring at
m/e 256 and 247 for the nonadeuterated and undeuterated mol. ions and at
m/e 226 and 217 for the nonadeuterated and undeuterated (M - NO)+
fragments, respectively, and at m/e 228 for chrysene, 1- and 2-nitropyrene
and 2-nitrofluoranthene were identified; these were determined (concn. up
to 0.03, 0.02 and 0.3 ng m-3, respectively) by comparison of mol. ion
peak-area ratios with respect to chrysene with those for a standard
mixture.
Chemical Substance(s):fluoranthene, 2-nitro- (13177-29-2); pyrene, 2-nitro-
(789-07-1); air-borne particulates
End of record 71
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 Record 72 of 92 for NITRO AND PAH                         Go to record 73

3008562
Title:Mutagenicity of polycyclic aromatic compounds (PAC) identified in
source emissions and ambient air
Author:Moeller, M.; Hagen, I.; Ramdahl, T.
Author Affiliation:Center Ind. Res. (SI), PO Box 350, Blindern, 0314 Oslo
3, Norway
Journal:Mutat. Res   Vol157   Iss2/3   Pg149-156
Publication Date:AUG-SEP 1985
CODEN:MUREAV   ISSN:0027-5107
Language:English
Document Type:Journal
Abstract:Several polycyclic aromatic compounds (PAC) including nitrated and
oxygenated derivatives of polycyclic aromatic hydrocarbons (PAH) were
tested for mutagenic activity in the Salmonella/microsome assay. The isomer
mix of nitro-1-hydroxypyrenes showed the highest direct mutagenic response
in both the Salmonella TA98 and TA100. The direct-acting mutagenicity of
the nitro-1-hydroxypyrene isomer mix was dependent upon reduction of the
nitro function. The oxygenated derivatives of PAH containing aldehyde or
keto groups showed weak or no mutagenic responses. In most cases addition
of S9 was essential for any mutagenic activity
Chemical Substance(s):anthracene endoperoxide; anthracenecarboxaldehyde
(642-31-9); anthracenone; benzanthracenone; benzofluorene (479-79-8);
benzopyrenone; biphenylcarboxaldehyde (1204-60-0); cyanoacenaphthylene;
dibenzofluorenone; hydrocarbons polycyclic aromatic; nitroacenaphthene;
nitroanthrone; nitrohydroxypyrene; pyrene sulphonic acid;
pyrenecarboxaldehyde (3029-19-4); retene
End of record 72
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 Record 73 of 92 for NITRO AND PAH                         Go to record 74

1008982
Title:Identification of trace organic compounds in dimethyl sulphoxide
solution using high-performance liquid chromatography and gas
chromatography - mass spectrometry.
Author:Tong, H. Y.; Centen, J. D.; Karasek, F. W.; Jellum, E.; Helland, P.
Author Affiliation:Dept. Chem., Univ. Waterloo, Waterloo, Ont. N2L 3G1,
Canada
Journal:J. Chromatogr.   Vol324   Iss2   Pg373-383
Publication Date:24 May 1985
CODEN:JOCRAM   ISSN:0021-9673
Language:English
Document Type:Journal
Abstract:A dimethyl sulphoxide soln. of an air-borne particulate extract
was subjected to semi-preparative h.p.l.c. on a column (25 cm .times. 9.4
mm) of Spherisorb silica with gradient elution with hexane, CH2Cl2 and
acetonitrile and detection at 254 nm. The eluate fractions were
concentrated by evaporation and subjected to g.c. - m.s. on a fused-silica
column (30 m .times. 0.32 mm) of DB-5 with temp.-programming from
80.degree. to 300.degree. at 6.degree. min-1, He as carrier gas and
electron-impact m.s. at 70 eV. Recoveries were 81 to 110% for PAH, oxy-PAH
and nitro-PAH.
Chemical Substance(s):hydrocarbons, polycyclic aromatic; air-borne
particulates
End of record 73
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 Record 74 of 92 for NITRO AND PAH                         Go to record 75

1008427
Title:Analysis of nitro-PAH in diesel exhaust particulate extracts with
multi-column h.p.l.c.
Author:Lindner, W.; Posch, W.; Wolfbeis, O. S.; Tritthart, P.
Author Affiliation:Inst. Pharm. Chem., Univ. Graz, 8010 Graz, Austria
Journal:Chromatographia   Vol20   Iss4   Pg213-218
Publication Date:Apr 1985
CODEN:CHRGB7   ISSN:0009-5893
Language:English
Document Type:Journal
Abstract:Diesel soot particulates were collected on filters and extracted
with toluene in a Soxhlet apparatus. The extract was separated on a silica
gel column and the non-polar fraction was subjected to h.p.l.c. at
20.degree. on a column (25 cm .times. 4.6 mm) packed with "pyrenebutyric
acid amide phase" (prep. described) on LiChrosorb Si 100 (7 .mu.m)
switching to a column (25 cm .times. 4.0 mm) packed with Spherisorb ODS II
(5 .mu.m). The eluent was methanol - water (3:1) at a flow rate of 2 ml
min-1 and with 360-nm or diode-array detection. The enhanced specificity
achieved by the two-column system enabled the determination of
1-nitropyrene in the range 3 to 100 ng mg-1
Chemical Substance(s):nitro-compounds, polycyclic aromatic; exhaust gases,
diesel-engine
End of record 74
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 Record 75 of 92 for NITRO AND PAH                         Go to record 76

1008098
Title:Analysis of nitro-4H-cyclopenta(def)phenanthrenes in ambient air by
fused-silica-capillary gas chromatography - mass spectrometry.
Author:Ramdahl, T.
Author Affiliation:Central Inst. Ind. Res., Blindern, 0314 Oslo 3, Norway
Journal:HRC CC, J. High Resolut. Chromatogr. Chromatogr. Commun.   Vol8
Iss2   Pg82-84
Publication Date:Feb 1985
CODEN:HCJCDB   ISSN:0344-7138
Language:English
Document Type:Journal
Abstract:The identification of nitrocyclopenta(def)phenanthrene isomers was
attempted with use of fused-silica-capillary g.c. coupled with
mass-selective detection. A column (30 m .times. 0.25 mm) coated with 0.25
.mu.m of DB-5 was used. The samples were introduced in CH2Cl2 by splitless
injection and He was the carrier gas. The mass chromatogram of mass 235
showed a mixture of 1-, 2-, 3- and 8-nitrocyclopenta(def)phenanthrenes, and
their relative retention times were determined. The need is shown for both
high-resolution g.c. and very sensitive detection, e.g., negative-ion
chemical-ionization m.s., for positive identification of nitro-PAH in
environmental samples.
Chemical Substance(s):4H-cyclopenta[def]phenanthrene derivatives, nitro-;
air
End of record 75
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 Record 76 of 92 for NITRO AND PAH                         Go to record 77

1010015
Title:Development of a routine technique for analysis of nitro-PAH in
diesel particulate extract.
Author:Menzies, K. T.; Wong, C. M.; Magni, L. H.; Randel, M. A.
Author Affiliation:Arthur D. Little Inc., Cambridge, MA, USA
Report Title:Report
Report Number:CRC-APRAC-CAPE-30-81-03   Pg79
Publication Date:1985
Language:English
Document Type:Technical Report
Abstract:Several chromatographic methods potentially suitable for routine
analysis of nitro-PAH in diesel-exhaust particulate extracts were selected
from current literature. For method evaluation, GC separation was used with
a fused-silica capillary column and ECD. For accurate analysis, a
semi-preparative HPLC method with an amino-bonded column was used to remove
interfering compounds before GC. A method which provides adequate precision
(.+-.20%) and accuracy (.+-.20%) for mononitro-PAH in diesel-exhaust
particulate was validated.
Chemical Substance(s):nitro-compounds, polycyclic aromatic; exhaust gases,
diesel-engine
End of record 76
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 Record 77 of 92 for NITRO AND PAH                         Go to record 78

1008064
Title:High-performance liquid-chromatographic studies of environmental
carcinogens in China.
Author:Xu, X.; Jin, Z.
Author Affiliation:Inst. Environ. Chem., Acad. Sin., Beijing, China
Journal:J. Chromatogr.   Vol317   Pg545-555
Publication Date:28 Dec 1984
CODEN:JOCRAM   ISSN:0021-9673
Language:English
Document Type:Journal
Abstract:A review is presented, with 18 references. Determinations by
h.p.l.c. of PAH, nitro-substituted PAH and aflatoxins in environmental
samples, e.g., air particulates, surface water and smoke (from burning
fuels) are discussed.
Chemical Substance(s):hydrocarbons, polycyclic aromatic; aflatoxins;
carcinogens; environmental materials
End of record 77
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 Record 78 of 92 for NITRO AND PAH                         Go to record 79

1008024
Title:Relationship between gas-chromatographic retention indices and
molecular connectivities of nitrated polycyclic aromatic hydrocarbons.
Author:Doherty, P. J.; Hoes, R. M.; Robbat, A., jun.; White, C. M.
Author Affiliation:Dept. Chem., Tufts Univ., Medford, MA 02155, USA
Journal:Anal. Chem.   Vol56   Iss14   Pg2697-2701
Publication Date:Dec 1984
CODEN:ANCHAM   ISSN:0003-2700
Language:English
Document Type:Journal
Abstract:It is reported that the retention indices, as obtained by g.c. on
fused-silica columns coated with SE-52 (White et al., Anal. Abstr., 1984,
46, 6C31), for 56 mono- and di-nitro-PAH are, in each instance, approx.
rectilinearly related to topology (calculated molecular connectivities).
These relationships permit approx. prediction of g.c. retention behaviour
of nitro-PAH.
Chemical Substance(s):nitro-compounds, polycyclic aromatic
End of record 78
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 Record 79 of 92 for NITRO AND PAH                         Go to record 80

1007754
Title:Quantitative analysis of polycyclic aromatic compounds in
diesel-exhaust particulate extracts by combined chromatographic techniques.
Author:Tong, H. Y.; Sweetman, J. A.; Karasek, F. W.; Jellum, E.; Thorsrud,
A. K.
Author Affiliation:Dept. Chem., Univ. Waterloo, Waterloo, Ont. N2L 3G1,
Canada
Journal:J. Chromatogr.   Vol312   Pg183-202
Publication Date:16 Nov 1984
CODEN:JOCRAM   ISSN:0021-9673
Language:English
Document Type:Journal
Abstract:High-resolution g.c. - f.i.d. with on-column injection was used
for the analysis of PAH, oxy-PAH, nitro-PAH and phthalate esters in the
extracts of three different diesel-exhaust particulates. The compounds were
separated initially into different classes by h.p.l.c. fractionation
according to their relative polarities on a column (25 cm .times. 9.4 mm)
of Spherisorb (10 .mu.m) and then tentatively identified by g.c. - m.s. and
retention indices. The results, combined with quantitative results obtained
in previous studies, are presented as ng of component per mg of extract for
>100 compounds.
Chemical Substance(s):hydrocarbons, polycyclic aromatic; exhaust gases,
diesel-engine
End of record 79
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 Record 80 of 92 for NITRO AND PAH                         Go to record 81

1007480
Title:Determination of 1-nitropyrene by thin-layer chromatography in a
diesel exhaust particulate extract.
Author:Brown, K. K.; Poole, C. F.
Author Affiliation:Dept. Chem., Wayne State Univ., Detroit, MI 48202, USA
Journal:HRC CC, J. High Resolut. Chromatogr. Chromatogr. Commun.   Vol7
Iss9   Pg520-524
Publication Date:Sep 1984
CODEN:HCJCDB   ISSN:0344-7138
Language:English
Document Type:Journal
Abstract:1-Nitropyrene in an extract is reduced with NaBH4 to
1-aminopyrene, which is isolated by partitioning into hexane followed by
t.l.c. on silica gel with hexane - anisole (7:3) as developing solvent. The
fluorescence of 1-aminopyrene is .simeq.1000 times that of 1-nitropyrene,
but the poor fluorescence stability of 1-aminopyrene on silica gel
precludes the use of scanning fluorescence densitometry unless the
developed plates are impregnated with both 2,6-di-t-butyl-p-cresol and
Fomblin H-Vac (Montedison, New York). A rectilinear response up to 150 ng
of 1-aminopyrene and a detection limit of 1 ng were obtained (excitation at
365 nm and emission at 450 nm). For 165 .mu.g g-1 of 1-nitropyrene in a
particulate extract, the coeff. of variation (n = 14) was 9.0%. No
significant interference was observed from other nitro- or amino-PAH
present in the extract. The proposed method is recommended for screening
purposes.
Chemical Substance(s):pyrene, 1-nitro- (5522-43-0); exhaust gases,
diesel-engine
End of record 80
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 Record 81 of 92 for NITRO AND PAH                         Go to record 82

1007358
Title:Determination of nitrated-polyaromatic hydrocarbons (nitro-PAHs) in
environmental samples by high-resolution chromatographic techniques.
Author:Liberti, A.; Ciccioli, P.; Cecinato, A.; Brancaleoni, E.; Di Palo,
C.
Author Affiliation:Area Ric. Roma, Ist. Inquin. Atmos. CNR, 00016
Monterotondo Stazione (Rome), Italy
Journal:HRC CC, J. High Resolut. Chromatogr. Chromatogr. Commun.   Vol7
Iss7   Pg389-397
Publication Date:Jul 1984
CODEN:HCJCDB   ISSN:0344-7138
Language:English
Document Type:Journal
Abstract:Low-resolution liquid chromatography (on basic alumina) and
h.p.l.c. (on silica) were used for the pre-fractionation of the soluble
organic fraction extracted (with benzene - methanol) from particulate
matter or gaseous pollutants collected in adsorption traps. High-resolution
g.c. on fused-silica capillary columns (coated with OV-1 or DB-5) was used
to analyse four fractions containing alkanes and N-containing PAH and other
polar PAH. Nitrogen-containing species were separated and detected
specifically with use of N - P detection, and f.i.d., g.c. - m.s. of
positive ions and negative-ion chemical-ionization m.s. of the whole
fraction were used to identify and determine up to 35 components. The
method has been applied to extracts from diesel exhausts.
Chemical Substance(s):hydrocarbons, polycyclic aromatic; exhaust gases,
diesel-engine
End of record 81
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 Record 82 of 92 for NITRO AND PAH                         Go to record 83

1007060
Title:Determination of nitrated polycyclic aromatic hydrocarbons in diesel
particulates by gas chromatography with chemiluminescent detection.
Author:Yu, W. C.; Fine, D. H.; Chiu, K. S.; Biemann, K.
Author Affiliation:Anal. Instrum., Thermo Electron Corp., Waltham, MA
02254, USA
Journal:Anal. Chem.   Vol56   Iss7   Pg1158-1162
Publication Date:Jun 1984
CODEN:ANCHAM   ISSN:0003-2700
Language:English
Document Type:Journal
Abstract:1-Nitronaphthalene (I), 2-nitronaphthalene, 2-nitrofluorene and
1-nitropyrene (II) were detected selectively; the presence of I and II was
confirmed by m.s. Because of the selectivity of the detector to
nitro-compounds, PAH and related derivatives did not interfere. The method
was useful for screening of complex environmental samples. Analyses were
performed with a model 5840A Hewlett-Packard instrument equipped with an
on-column capillary injector, a fused-silica column (30 m .times. 0.32 mm)
with a methylphenylvinylsilicone bonded phase, He as carrier gas, and
temp.-programming from 40.degree. to 300.degree. at 6.degree. min-1,
maintained for 5 min at 300.degree.. A TEA model 610 analyser operating in
the nitro-mode was used as detector. The capillary column was coupled
directly to the pyrolysing furnace (at 900.degree.). Detection limits were
10 to 25 pg injected.
Chemical Substance(s):nitro-compounds; hydrocarbons, polycyclic aromatic;
exhaust gases, diesel-engine
End of record 82
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 Record 83 of 92 for NITRO AND PAH                         Go to record 84

1007059
Title:Capillary-column gas-chromatographic determination of polycyclic
aromatic nitro-compounds in particulate extracts.
Author:Campbell, R. M.; Lee, M. L.
Author Affiliation:Dept. Chem., Brigham Young Univ., Provo, UT 84602, USA
Journal:Anal. Chem.   Vol56   Iss6   Pg1026-1030
Publication Date:May 1984
CODEN:ANCHAM   ISSN:0003-2700
Language:English
Document Type:Journal
Abstract:The determination of nitro-PAH in a diesel-exhaust extract is
demonstrated. Pre-concentration by silicic acid column chromatography is
combined with reduction of the nitro-compounds with KBH4 (catalysed with
CuCl2) followed by derivatization with pentafluoropropionic anhydride. The
analytes, now in the form of pentafluoropropionamides, are analysed by
capillary g.c. with e.c.d., f.i.d. and N-selective thermionic detection and
by g.c. - m.s. Positive identification of 10 nitro-PAH isomers has been
achieved by comparison with g.c. retention data of standard compounds and
from g.c. - m.s. and low-resolution m.s. data. Tentative identification is
made of more than 120 nitro-PAH. Nitro-compounds have been identified in an
extract of light diesel particulate matter at concn. of 0.5 to 43 ppm.
Concentrations are estimated to be accurate to within .+-.20%.
Chemical Substance(s):nitro-compounds, polycyclic aromatic; diesel fuel
End of record 83
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 Record 84 of 92 for NITRO AND PAH                         Go to record 85

1006811
Title:Isolation of mononitrated polycyclic aromatic hydrocarbons in
particulate matter by liquid chromatography and determination by gas
chromatography with the thermal energy analyzer.
Author:Tomkins, B. A.; Brazell, R. S.; Roth, M. E.; Ostrum, V. H.
Author Affiliation:Anal. Chem. Div., Oak Ridge Natl. Lab., Oak Ridge, TN
37831, USA
Journal:Anal. Chem.   Vol56   Iss4   Pg781-786
Publication Date:Apr 1984
CODEN:ANCHAM   ISSN:0003-2700
Language:English
Document Type:Journal
Abstract:Nitrated PAH were extracted ultrasonically from particulate
matter, and such potentially interfering species as nitroquinolines,
nitroketones and nitrophenols were separated, and the nitrated PAH
enriched, by semi-preparative h.p.l.c. on a Zorbax aminosilane column,
which is less affected by H2O than a silica column but does not remove all
interfering substances. A nitro-PAH-enriched fraction eluted by CH2Cl2 -
hexane (1:9) was analysed by g.l.c. on a glass column (3 m .times. 3.2 mm
o.d.) packed with 3% of OV-17 on Gas-Chrom Q (100 to 200 mesh) and operated
with He (30 ml min-1) as carrier gas and temp.-programming from 60.degree.
(maintained for 4 min) at 8.degree. min-1 to 280.degree. (maintained for 16
min). A thermal energy analyser (Thermo Electron TEA model 543) was
interfaced to the chromatograph (interface temp. 200.degree.); the
pyrolyser was maintained at 900.degree., and responded rectilinearly over 3
or 4 orders of magnitude. The detection limit was 0.3 ng of nitro-PAH at a
signal-to-noise ratio of 2, and the analyser discriminated against 100-fold
amounts or more of such non-nitrated species as aromatic amines,
aza-arenes, ketones and phenols. The accuracy of the method was tested with
fly ash, urban dust and diesel particulates with various nitro-PAH added at
1- and 10-ppm levels. Recoveries of individual nitro-PAH varied
significantly, and depended on the sample matrix, test compound and concn.
added.
Chemical Substance(s):nitro-compounds, polycyclic aromatic; air-borne
particulates; dust; fly ash
End of record 84
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 Record 85 of 92 for NITRO AND PAH                         Go to record 86

1006327
Title:Detection of small amounts of aromatic nitro-compounds by
pre-resonance Raman spectrometry.
Author:Higuchi, S.; Zheng, Z.; Tanaka, S.
Author Affiliation:Dept. Ind. Chem., Fac. Eng., Univ. Tokyo, Bunkyo-ku,
Tokyo 113, Japan
Journal:Bunseki Kagaku   Vol33   Iss1   Pg65-68
Publication Date:Jan 1984
CODEN:BNSKAK   ISSN:0525-1931
Language:Japanese
Document Type:Journal
Abstract:Samples of nitrobenzene and the 4-nitro-derivatives of phenol,
aniline, N-methylaniline and NN-dimethylaniline were analysed by
pre-resonance Raman spectrometry at 260 and 395 nm, with laser excitation
at 488.0 nm. Under these conditions, the detection limits (based on the NO2
symmetric stretching vibration band) ranged from 42 ppb (for
NN-dimethyl-4-nitroaniline) to 604 ppb (nitrobenzene). The method was
sufficiently sensitive to be applied in analysis for nitro-derivatives of
PAH in air.
Chemical Substance(s):benzene, nitro- (98-95-3); phenol, 4-nitro-
(100-02-7); aniline, 4-nitro- (100-01-6); aniline, N-methyl-4-nitro-
(100-15-2); aniline, NN-dimethyl-4-nitro- (100-23-2); air
End of record 85
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 Record 86 of 92 for NITRO AND PAH                         Go to record 87

1005891
Title:Gas-chromatographic retention characteristics of nitrated polycyclic
aromatic hydrocarbons on SE-52.
Author:White, C. M.; Robbat, A., jun.; Hoes, R. M.
Author Affiliation:Anal. Chem. Branch, Pittsburgh Energy Technol. Center,
Pittsburgh, PA 15236, USA
Journal:Chromatographia   Vol17   Iss11   Pg605-612
Publication Date:Nov 1983
CODEN:CHRGB7   ISSN:0009-5893
Language:English
Document Type:Journal
Abstract:The g.c. separation of 56 such compounds in fused-silica capillary
columns (30 m .times. 0.2 or 0.3 mm) coated with 0.25 .mu.m of SE-52 was
studied, and retention times were measured to within .+-.0.01 min.
Isothermal operating temp. of 130.degree., 140.degree. and 150.degree. and
programming from 25.degree. to 295.degree. were used. The effects of
initial oven temp. (25.degree. to 100.degree.) and of different instruments
and columns were also evaluated; full details of g.c. conditions are
tabulated. The rectilinear relationship between retention index and dipole
moment of isomeric mononitrated solutes was used to predict the retention
indices of some nitro-PAH. Results are tabulated and compared with values
previously published.
Chemical Substance(s):nitro-compounds, polycyclic aromatic
End of record 86
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 Record 87 of 92 for NITRO AND PAH                         Go to record 88

1005643
Title:Micro-bore liquid chromatography with electrochemical detection for
determination of nitro-substituted polynuclear aromatic hydrocarbons in
diesel soot.
Author:Jin, Z.; Rappaport, S. M.
Author Affiliation:Dept. Biomed. and Environ. Health Sci., Sch. Public
Health, Univ. California, Berkeley, CA 94720, USA
Journal:Anal. Chem.   Vol55   Iss11   Pg1778-1781
Publication Date:Sep 1983
CODEN:ANCHAM   ISSN:0003-2700
Language:English
Document Type:Journal
Abstract:Prepared mixtures of nitro-substituted PAH and extracts of diesel
soot were analysed by h.p.l.c. on two columns (50 cm .times. 1 mm), in
series, of C18 material, with 30% of 0.1M-chloroacetic acid - Na acetate in
acetonitrile as mobile phase (40 .mu.l min-1) and detection with use of a
vitreous-carbon working electrode operated at -0.6 or -0.3 V. Calibration
graphs for seven compounds were rectilinear over three orders of magnitude,
and detection limits were 0.01 to 1 ng. The proposed system was 3 to 7
times more sensitive than h.p.l.c. in normal-bore columns. Only
1-nitropyrene was identified in soot samples, at concn. ranging from 0.45
to 14.7 ng mg-1
Chemical Substance(s):hydrocarbons, polycyclic aromatic; soot
End of record 87
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 Record 88 of 92 for NITRO AND PAH                         Go to record 89

1005508
Title:Determination of nitro-polynuclear aromatics in ambient aerosol
samples.
Author:Tanner, R. L.; Fajer, R.
Author Affiliation:Environ. Chem. Div., Brookhaven Natl. Lab., Upton, NY
11973, USA
Journal:Int. J. Environ. Anal. Chem.   Vol14   Iss3   Pg231-241
Publication Date:Feb 1983
CODEN:IJEAA3   ISSN:0306-7319
Language:English
Document Type:Journal
Abstract:Nitro-derivatives of PAH were determined directly, after
extraction from the collection filter into cyclohexane, by capillary-column
g.c. with e.c.d.; PAH were determined after conversion into
nitro-derivatives. Nitration procedures are described and discussed. The
g.c. was performed on a fused-silica column (30 m .times. 0.22 mm) coated
with DB-5, with splitless injection and 63Ni e.c.d. Identification was by
g.c. - m.s. Calibration graphs were rectilinear for up to .simeq.2 ng of,
e.g., 1-nitropyrene. Detection limits were 20 and 60 pg for pyrene and
benzo(a)pyrene, respectively.
Chemical Substance(s):hydrocarbons, polycyclic aromatic; aerosols
End of record 88
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 Record 89 of 92 for NITRO AND PAH                         Go to record 90

1005646
Title:Sampling of vehicle emissions for chemical analysis and biological
testing.
Author:Schuetzle, D.
Author Affiliation:Anal. Sci. Dept., Ford Motor Co., Dearborn, MI 48121,
USA
Journal:EHP, Environ. Health Perspect.   Vol47   Pg65-80
Publication Date:Jan 1983
Language:English
Document Type:Journal
Abstract:A review is presented of the development of methods for the
sampling and chemical and biological analyses for PAH and their oxygenated
and nitro-derivatives in vehicular exhaust emissions, with emphasis on the
"moderately polar" and "highly polar" fractions. The distribution of the
direct-acting Ames mutagenic components (tested with Salmonella typhimurium
strain TA 98) between the gas and particulate phases and identification of
such particulate components, the concn. of PAH identified in the
"moderately polar" particulate fraction and the extent of valid correlation
between laboratory test samples and vehicular emissions on the road are
discussed. (83 references.
Chemical Substance(s):hydrocarbons, polycyclic aromatic; exhaust gases
End of record 89
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 Record 90 of 92 for NITRO AND PAH                         Go to record 91

1003761
Title:Isolation and identification of mutagenic nitro-PAH (nitro-polycyclic
aromatic hydrocarbons) in diesel-exhaust particulates.
Author:Xu, X. B.; Nachtman, J. P.; Jin, Z. L.; Wei, E. T.; Rappaport, S.
M.; Burlingame, A. L.
Author Affiliation:Dept. Biomed. and Environ. Health Sci., Univ.
California, Berkeley, CA 94720, USA
Journal:Anal. Chim. Acta   Vol136   Pg163-174
Publication Date:1982
CODEN:ACACAM   ISSN:0003-2670
Language:English
Document Type:Journal
Chemical Substance(s):hydrocarbons, polycyclic aromatic; exhaust gases,
diesel-engine
End of record 90
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 Record 91 of 92 for NITRO AND PAH                         Go to record 92

1013531
Title:Artefacts during the sampling of nitro-PAH of diesel exhaust.
Author:Levsen, K,; Puttins, U.; Schilhabel, J.; Priess, B.
Journal:Fresenius' Z. Anal. Chem.
Language:English
Document Type:Journal
Abstract:1-Nitropyrene was determined, by capillary GC on a DB-5 column
with N-sensitive detection, in the nitro-PAH fraction of propan-2-ol
extracts from four parallel filters in the exhaust from a diesel engine
operated according to US 72 federal test procedure (one test cycle = 23
min). The content in two filters that were re-exposed to filtered exhaust
was consistently higher than that in the other two, indicating that
substantial nitration of pyrene could occur on a filter exposed for
extended periods. However, use of a dilution tunnel and operation for only
one test cycle would mean that the contribution of sampling artefacts to
the total 1-nitropyrene content would be small (13.6 .+-. 9.5% in this
study, in broad agreement with earlier results).
Chemical Substance(s):nitro-compounds, polycyclic aromatic; exhaust gases,
diesel-engine
End of record 91
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 Record 92 of 92 for NITRO AND PAH

1013696
Title:Methods for measurement of unregulated pollutants from automobiles in
the environment.
Author:Person, A.; Lopez, B.; Masclet, P.
Journal:Pollut. Atmos.
Citation:Chem. Abstr.
Language:French
Document Type:Journal
Abstract:A review is presented, with 30 references, of sampling and
analysis of volatile hydrocarbons, aldehydes and PAH and their
nitro-derivatives.
Chemical Substance(s):organic compounds; air
End of record 92
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