Rate constants for the atmospheric reactions of alkoxy radicals: An updated estimation method

被引：165

作者：

Atkinson, Roger ^{[1
,2
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机构：

[1] Univ Calif Riverside, Statewide Air Pollut Res Ctr, Riverside, CA 92521 USA

[2] Univ Calif Riverside, Dept Environm Sci, Riverside, CA 92521 USA

[3] Univ Calif Riverside, Dept Chem, Riverside, CA 92521 USA

来源：

ATMOSPHERIC ENVIRONMENT | 2007年 / 41卷 / 38期

基金：

美国国家科学基金会;

关键词：

alkoxy radical; decomposition reaction; reaction with O-2; isomerization reaction; volatile organic compounds; atmospheric chemistry;

D O I：

10.1016/j.atmosenv.2007.07.002

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Alkoxy radicals are key intermediates in the atmospheric degradations of volatile organic compounds, and can typically undergo reaction with O-2, unimolecular decomposition or unimolecular isomerization. Previous structure-reactivity relationships for the estimation of rate constants for these processes for alkoxy radicals [Atkinson, R., 1997. Atmospheric reactions of alkoxy and beta-hydroxyalkoxy radicals. International Journal of Chemical Kinetics, 29, 99-111; Aschmann, S.M., Atkinson, R., 1999. Products of the gas-phase reactions of the OH radical with n-butyl methyl ether and 2-isopropoxyethanol: reactions of ROC(O-center dot)< radicals. International Journal of Chemical Kinetics, 31, 501-513] have been updated to incorporate recent kinetic data from absolute and relative rate studies. Temperature-dependent rate expressions are derived allowing rate constants for all three of these alkoxy radical reaction pathways to be calculated at atmospherically relevant temperatures. (c). 2007 Elsevier Ltd. All rights reserved.

引用

页码：8468 / 8485

页数：18

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