Identification of nitroaromatics in diesel exhaust particulate using gas chromatography/negative ion chemical ionization mass spectrometry and other techniques

Journal Article · Thu Apr 01 00:00:00 EST 1982 · Environ. Sci. Technol.; (United States)

DOI:https://doi.org/10.1021/es00098a007· OSTI ID:5581637

Newton, D L ^[1]; Erickson, M D; Tomer, K B; Pellizzari, E D; Gentry, P

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1. Research Triangle Inst., NC

A series of nitroaromatic compounds were identified in diesel exhaust particulate extract. Isomers of nitroanthracene (and/or nitrophenanthrene) and nitropyrene (and/or nitrofluoranthene) were unequivocally identified. Alkyl homologues of nitroanthracene through C/sub 3/-alkyl-nitroanthracene were tentatively identified. In addition, a C/sub 18/H/sub 11/NO/sub 2/ isomer was tentatively identified. The nitro-substituted polynuclear aromatic hydrocarbons (PAHs) were found in two fractions of diesel exhaust particulate extract collected from a low-pressure liquid chromatography (LPLC) column. One of the two fractions containing nitroaromatic constitutents accounted for a large percentage of the mutagenicity of the crude particulate extract. Initial identification were made by using high-resolution gas chromatography/electron impact mass spectrometry/computer (GC/EIMS) and negative ion chemical ionization mass specrometry/computer (GC/NICIMS). These identifications were confirmed by direct probe high-resolution mass spectrometry (HRMS) and gas chromatography/Fourier transform infrared spectrometry (GC/FT IR). The relative merit of each analytical technique for the determination of nitroaromatics is discussed with emphasis on the usefulness of GC/NICIMS as a means of analyzing for nitro-substituted PAHs.

• OSTI ID: 5581637
• Journal Information: Environ. Sci. Technol.; (United States), Vol. 16:4
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
DIESEL ENGINES
COMBUSTION PRODUCTS
MASS SPECTROSCOPY
PARTICULATES
QUANTITATIVE CHEMICAL ANALYSIS
COMPARATIVE EVALUATIONS
DIESEL FUELS
EXHAUST GASES
GAS CHROMATOGRAPHY
ION MICROPROBE ANALYSIS
LIQUID COLUMN CHROMATOGRAPHY
NITRO COMPOUNDS
CHEMICAL ANALYSIS
CHROMATOGRAPHY
ENGINES
FLUIDS
GASEOUS WASTES
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MICROANALYSIS
NONDESTRUCTIVE ANALYSIS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PARTICLES
PETROLEUM PRODUCTS
SEPARATION PROCESSES
SPECTROSCOPY
WASTES
500200* - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)