Products of the gas-phase reactions of o-, m- and p-xylene with the OH radical in the presence and absence of NOx

Autor:	Janet Arey, Eric S. C. Kwok, Roger Atkinson, Sara M. Aschmann
Rok vydání:	1997
Předmět:	Air sampling chemistry.chemical_compound Reaction mechanism Chemistry Ionization Xylene Physical and Theoretical Chemistry Tandem mass spectrometry Photochemistry Medicinal chemistry p-Xylene Ion Gas phase
Zdroj:	Journal of the Chemical Society, Faraday Transactions. 93:2847-2854
ISSN:	1364-5455 0956-5000
DOI:	10.1039/a701535f
Popis:	The products of the gas-phase reactions of the OH radical with o-, m- and p-xylene, in the presence and absence of NO x , have been investigated using direct air sampling, atmospheric-pressure ionisation tandem mass spectrometry (API–MS). Partially and fully deuteriated xylenes were also studied. In addition to ion peaks due to tolualdehydes and dimethylphenols, ion peaks observed from the xylene, [ 2 H 6 ]xylene and [ 2 H 10 ]xylene reactions are attributed to the [M+H] + ions of the C 4 -unsaturated dicarbonyl HC(O)CHCHCHO, C 5 -unsaturated dicarbonyls such as CH 3 C(O)CHCHCHO and its isomers, C 6 -unsaturated dicarbonyls such as CH 3 C(O)CHCHC(O)CH 3 and its isomers, C 8 -di-unsaturated dicarbonyls such as CH 3 C(O)C(CH 3 )CHCHCHCHO and its isomers, C 8 -unsaturated epoxy-dicarbonyls and, possibly, C 8 -epoxy-cyclohexenones, and their partially and fully deuteriated analogues. Possible reaction mechanisms leading to the observed products are presented.
Databáze:	OpenAIRE
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