|
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
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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
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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
------------------------------------------------------------------------
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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