Analysis of nitrated polycyclic aromatic hydrocarbons in diesel particulates
- Ford Motor Co., Dearborn, MI
The analysis of nitrated polycyclic aromatic hydrocarbons (nitro-PAH) in diesel particulate extracts using a combination of high-performance liquid chromatography, gas chromatography/mass spectrometry, high-resolution mass spectrometry, and mass spectrometry/mass spectrometry (MS/MS) techniques is described. Triple stage quadrupole (TSQ)-MS/MS operated in the constant neutral loss mode is described for the rapid qualitative screening of nitro-PAH isomer groups in solvent extracts of diesel particulates. Twenty such isomer groups of nitro-PAH derivatives were found, many of these groups containing a large number of possible compounds. Mass analyzed ion kinetic energy spectrometry (MIKES)-MS/MS was found to be much less selective than the TSQ-MS/MS for the analysis of nitro-PAH in unfractionated diesel extracts. HPLC prefractionation was required to remove interferences in the MIKES analysis. Fused silica capillary GC/MS using on-column injection was found to be necessary for identifying specific nitro-PAH isomers and minimizing decomposition. The highly mutagenic 1-nitropyrene (1-NP) was the only compound found in the nitro(pyrenes and fluoranthenes) isomer group. The MIKES and TSQ techniques gave comparable results for the quantitation of 1-NP.
- OSTI ID:
- 5620048
- Journal Information:
- Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 54:2; ISSN ANCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400102 -- Chemical & Spectral Procedures
400104* -- Spectral Procedures-- (-1987)
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AROMATICS
CHEMICAL ANALYSIS
CHROMATOGRAPHY
COMBUSTION PRODUCTS
DIESEL FUELS
EXHAUST GASES
FLUIDS
GAS CHROMATOGRAPHY
GASEOUS WASTES
GASES
HYDROCARBONS
LIQUID COLUMN CHROMATOGRAPHY
MASS SPECTROSCOPY
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PARTICLES
PARTICULATES
PETROLEUM PRODUCTS
POLYCYCLIC AROMATIC HYDROCARBONS
SCREENING
SEPARATION PROCESSES
SPECTROSCOPY
WASTES