Gas-phase chemistry of citronellol with ozone and OH radical: Rate constants and products

A bimolecular rate constant, k OH+citronellol, of (170±43)×10 −12 cm 3 molecule −1 s −1 was measured using the relative rate technique for the reaction of the hydroxyl radical (OH) with 3,7-dimethyl-6-octen-1-ol (citronellol) at (297±3) K and 1 atmosphere total pressure. Additionally, a bimolecular...

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Vydáno v:	Atmospheric environment (1994) Ročník 40; číslo 4; s. 726 - 735
Hlavní autoři:	Ham, Jason E., Proper, Steven P., Wells, J.R.
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	Oxford Elsevier Ltd 01.02.2006 Elsevier Science
Témata:	3,7-dimethyl-6-octen-1-ol Applied sciences Atmospheric pollution Buildings. Public works Citronellol Exact sciences and technology Indoor pollution and occupational exposure Kinetics Oxygenated organic compounds Pollution Pollution indoor buildings Reaction products Reaction products Oxygenated organic compounds Citronellol Kinetics 3,7-dimethyl-6-octen-1-ol Chemical analysis Pollutant behavior Reaction initiator Reaction product Alcohol Ozone Volatile organic compound Chemical reaction kinetics 3.7-dimethyl-6-octen-1-ol: Reaction products Reaction mechanism Indoor pollution Hydroxyl radicals Qualitative analysis Gaseous phase reaction Organic compounds
ISSN:	1352-2310, 1873-2844
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Popis
Shrnutí:	A bimolecular rate constant, k OH+citronellol, of (170±43)×10 −12 cm 3 molecule −1 s −1 was measured using the relative rate technique for the reaction of the hydroxyl radical (OH) with 3,7-dimethyl-6-octen-1-ol (citronellol) at (297±3) K and 1 atmosphere total pressure. Additionally, a bimolecular rate constant, k O 3 + citronellol , of (2.4±0.1)×10 −16 cm 3 molecule −1 s −1, was measured by monitoring the decrease in ozone (O 3) concentration in an excess of citronellol. To more clearly define part of citronellol's indoor environment degradation mechanism, the products of the citronellol+OH and citronellol+O 3 reactions were also investigated. The positively identified citronellol/OH and citronellol/O 3 reaction products were: acetone, ethanedial (glyoxal, HC( O)C( O)H), and 2-oxopropanal (methylglyoxal, CH 3C( O)C( O)H). The use of derivatizing agents O-(2,3,4,5,6-pentafluorobenzyl)hydroxylamine (PFBHA) and N, O-bis(trimethylsilyl) trifluoroacetamide (BSTFA) were used to propose 6-hydroxy-4-methylhexanal as the other major citronellol/OH and citronellol/O 3 reaction product. The elucidation of this other reaction product was facilitated by mass spectrometry of the derivatized reaction products coupled with plausible citronellol/OH and citronellol/O 3 reaction mechanisms based on previously published volatile organic compound/OH and volatile organic compound/O 3 gas-phase reaction mechanisms.
Bibliografie:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1352-2310 1873-2844
DOI:	10.1016/j.atmosenv.2005.10.004