Analysis of halogenated polycyclic aromatic hydrocarbons in urban air, snow and automobile exhaust |
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Authors: | Peter Haglund Tomas Alsberg Ake Bergman Bo Jansson |
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Affiliation: | Peter Haglund*, Tomas Alsberg, Ake Bergman,Bo Jansson |
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Abstract: | Urban air, snow and automobile exhaust samples were extensively cleaned up by open column liquid chromatography. The appropriate fractions were analysed for halogenated polycyclic aromatic hydrocarbons (XPAH) by gas chromatography/negative chemical ionization mass spectrometry (GC/NCIMS). XPAH were found in all three sample types. A urban air sample was found to contain chlorinated pyrenes, fluoranthenes and benzopyrene and brominated pyrenes and fluoranthenes. Furthermore, the concentration of 1-chloropyrene in that air sample was estimated to be 10 pg/m3. XPAH were also found in snow samples taken in the vicinity of a motor-way. Ethylene dibromide and ethylene dichloride, are probably the source of the halogen atoms in the XPAH detected in car exhaust. |
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