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Determination of polycyclic aromatic hydrocarbons and alkylated‐polycyclic aromatic hydrocarbons in particulate extracts using negative ion chemical ionization mass spectrometry
Author(s) -
Hilpert L. R.
Publication year - 1987
Publication title -
biomedical and environmental mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0887-6134
DOI - 10.1002/bms.1200140806
Subject(s) - particulates , chemistry , mass spectrometry , polycyclic aromatic hydrocarbon , alkylation , environmental chemistry , chemical ionization , hydrocarbon , electron ionization , diesel fuel , chromatography , ionization , ion , organic chemistry , catalysis
Abstract Gas chromatography/mass spectrometry using a combination of electron impact (EI) and Negative Ion Chemical Ionization (NICI) was used for the determination of polycyclic aromatic hydrocarbons (PAH) and alkylated‐PAH in extracts of two particulate materials which are Standard Reference Materials: SRM 1650 Diesel Particulate Matter, and SRM 1649 Urban Particulate Matter. The selectivity of NICI mass spectrometry for certain PAH enabled identification and selective determination of isomeric PAH and alkylated‐PAH in the particulate SRMs. Quantitative determinations for methylfluoranthenes, methylpyrenes, methylbenzofluoranthenes and methylbenzo(a)pyrenes in the two particulates showed that the methyl‐substituted species were present at levels as high as 30 percent of the parent‐PAH concentrations. Similarities in the alkylated‐PAH content of the air and diesel particulate materials are discussed in relation to the sources of the two materials.