GSTDTAP  > 地球科学
DOI10.5194/acp-18-14005-2018
Reactive quenching of electronically excited NO2* and NO3* by H2O as potential sources of atmospheric HOx radicals
Dillon, Terry J.1,2; Crowley, John N.1
2018-10-02
发表期刊ATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN1680-7316
EISSN1680-7324
出版年2018
卷号18期号:19页码:14005-14015
文章类型Article
语种英语
国家Germany; England
英文摘要

Pulsed laser excitation of NO2 (532-647 nm) or NO3 (623-662 nm) in the presence of H2O was used to initiate the gas-phase reaction NO2* + H2O -> products (Reaction R5) and NO3* + H2O -> products (Reaction R12). No evidence for OH production in Reactions (R5) or (R12) was observed and upper limits for OH production of k(5b)/k(5) < 1 x 10(-5) and k(12b)/k(12) < 0.03 were assigned. The upper limit for k(5b)/k(5) renders this reaction insignificant as a source of OH in the atmosphere and extends the studies (Crowley and Carl, 1997; Carr et al., 2009; Amedro et al., 2011) which demonstrate that the previously reported large OH yield by Li et al. (2008) was erroneous. The upper limit obtained for k(12b)/k(12) indicates that non-reactive energy transfer is the dominant mechanism for Reaction (R12), though generation of small but significant amounts of atmospheric HOx and HONO cannot be ruled out. In the course of this work, rate coefficients for overall removal of NO3* by N-2 (Reaction R10) and by H2O (Reaction R12) were determined: k(10) = (2.1 +/- 0.1) x 10(-11) cm(3) molecule(-1) s(-1) and k(12) = (1.6 +/- 0.3) x 10(-10) cm(3) molecule(-1) s(-1). Our value of k(12) is more than a factor of 4 smaller than the single previously reported value.


领域地球科学
收录类别SCI-E
WOS记录号WOS:000446097500006
WOS关键词ACTIVE THERMOCHEMICAL TABLES ; ABSORPTION CROSS-SECTION ; RATE COEFFICIENTS ; BOUNDARY-LAYER ; NITROUS-ACID ; WATER-VAPOR ; OH RADICALS ; NO3 ; CHEMISTRY ; NM
WOS类目Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/20633
专题地球科学
作者单位1.Max Planck Inst Chem, Div Atmospher Chem, Mainz, Germany;
2.Univ York, Dept Chem, Wolfson Atmospher Chem Labs, York, N Yorkshire, England
推荐引用方式
GB/T 7714
Dillon, Terry J.,Crowley, John N.. Reactive quenching of electronically excited NO2* and NO3* by H2O as potential sources of atmospheric HOx radicals[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(19):14005-14015.
APA Dillon, Terry J.,&Crowley, John N..(2018).Reactive quenching of electronically excited NO2* and NO3* by H2O as potential sources of atmospheric HOx radicals.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(19),14005-14015.
MLA Dillon, Terry J.,et al."Reactive quenching of electronically excited NO2* and NO3* by H2O as potential sources of atmospheric HOx radicals".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.19(2018):14005-14015.
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