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DOI	10.5194/acp-19-10643-2019
	Kinetics of the OH + NO2 reaction: Rate coefficients (217-333 K; 16-1200 mbar) and fall-off parameters for N2 and O2 bath gases
	Amedro D.; Bunkan A.J.C.; Berasategui M.; Crowley J.N.
发表日期	2019
ISSN	16807316
起始页码	10643
结束页码	10657
卷号	19 期号:16
英文摘要	The radical terminating, termolecular reaction between OH and NO2 exerts great influence on the NOy=NOx ratio and O3 formation in the atmosphere. Evaluation panels (IUPAC and NASA) recommend rate coefficients for this reaction that disagree by as much as a factor of 1.6 at low temperature and pressure. In this work, the title reaction was studied by pulsed laser photolysis and laser-induced fluorescence over the pressure range 16-1200 mbar and temperature range 217-333 K in N2 bath gas, with experiments at 295 K (67-333 mbar) for O2. In situ measurement of NO2 using two optical absorption set-ups enabled generation of highly precise, accurate rate coefficients in the fall-off pressure range, appropriate for atmospheric conditions. We found, in agreement with previous work, that O2 bath gas has a lower collision efficiency than N2 with a relative collision efficiency to N2 of 0.74. Using the Troe-type formulation for termolecular reactions we present a new set of parameters with k0(N2) D 2:6 × 10-30 cm6 molecule-2 s-1, k0(O2) D 2:0 × 10-30 cm6 molecule-2 s-1, m D 3:6, k1 D 6:3×10-11 cm3 molecule-1 s-1, and Fc D 0:39 and compare our results to previous studies in N2 and O2 bath gases. © 2019 The Author(s).
语种	英语
scopus关键词	hydroxide; in situ measurement; laser induced fluorescence; low pressure; low temperature; nitrogen oxides; photolysis; reaction kinetics
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/144200
作者单位	Division of Atmospheric Chemistry, Max-Planck-Institut für Chemie, Mainz, 55128, Germany
推荐引用方式 GB/T 7714	Amedro D.,Bunkan A.J.C.,Berasategui M.,et al. Kinetics of the OH + NO2 reaction: Rate coefficients (217-333 K; 16-1200 mbar) and fall-off parameters for N2 and O2 bath gases[J],2019,19(16).
APA	Amedro D.,Bunkan A.J.C.,Berasategui M.,&Crowley J.N..(2019).Kinetics of the OH + NO2 reaction: Rate coefficients (217-333 K; 16-1200 mbar) and fall-off parameters for N2 and O2 bath gases.Atmospheric Chemistry and Physics,19(16).
MLA	Amedro D.,et al."Kinetics of the OH + NO2 reaction: Rate coefficients (217-333 K; 16-1200 mbar) and fall-off parameters for N2 and O2 bath gases".Atmospheric Chemistry and Physics 19.16(2019).