气候变化领域集成服务门户(CCPortal): Biomass burning plume chemistry: OH-radical-initiated oxidation of 3-penten-2-one and its main oxidation product 2-hydroxypropanal

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DOI	10.5194/acp-21-18557-2021
	Biomass burning plume chemistry: OH-radical-initiated oxidation of 3-penten-2-one and its main oxidation product 2-hydroxypropanal
	Illmann N.; Patroescu-Klotz I.; Wiesen P.
发表日期	2021
ISSN	1680-7316
起始页码	18557
结束页码	18572
卷号	21 期号:24
英文摘要	In order to enlarge our understanding of biomass burning plume chemistry, the OH-radical-initiated oxidation of 3-penten-2-one (3P2), identified in biomass burning emissions, and 2-hydroxypropanal (2HPr) was investigated at 298 ± 3 K and 990 ± 15 mbar in two atmospheric simulation chambers using long-path FTIR spectroscopy. The rate coefficient of 3P2 + OH was determined to be (6.2 ± 1.0) × 10-11 cm3 molec.-1 s-1 and the molar first-generation yields for acetaldehyde, methyl glyoxal, 2HPr, and the sum of peroxyacetyl nitrate (PAN) and CO2, used to determine the CH3C(O) radical yield, were 0.39 ± 0.07, 0.32 ± 0.08, 0.68 ± 0.27, and 0.56 ± 0.14, respectively, under conditions where the 3P2-derived peroxy radicals react solely with NO. The 2HPr + OH reaction was investigated using 3P2 + OH as a source of the α-hydroxyaldehyde adjusting the experimental conditions to shift the reaction system towards secondary oxidation processes. The rate coefficient was estimated to be (2.2 ± 0.6) × 10-11 cm3 molec.-1 s-1. Employing a simple chemical mechanism to analyse the temporal behaviour of the experiments, the further oxidation of 2HPr was shown to form methyl glyoxal, acetaldehyde, and CO2 with estimated yields of 0.27 ± 0.08, 0.73 ± 0.08, and 0.73 ± 0.08, respectively. © 2021 Niklas Illmann et al.
语种	英语
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/246348
作者单位	Institute for Atmospheric and Environmental Research, Bergische Universität Wuppertal, Gaußstr. 20, Wuppertal, 42097, Germany
推荐引用方式 GB/T 7714	Illmann N.,Patroescu-Klotz I.,Wiesen P.. Biomass burning plume chemistry: OH-radical-initiated oxidation of 3-penten-2-one and its main oxidation product 2-hydroxypropanal[J],2021,21(24).
APA	Illmann N.,Patroescu-Klotz I.,&Wiesen P..(2021).Biomass burning plume chemistry: OH-radical-initiated oxidation of 3-penten-2-one and its main oxidation product 2-hydroxypropanal.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(24).
MLA	Illmann N.,et al."Biomass burning plume chemistry: OH-radical-initiated oxidation of 3-penten-2-one and its main oxidation product 2-hydroxypropanal".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.24(2021).