气候变化领域集成服务门户(CCPortal): Atmospheric photooxidation and ozonolysis of "3-carene and 3-caronaldehyde: Rate constants and product yields

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DOI	10.5194/acp-21-12665-2021
	Atmospheric photooxidation and ozonolysis of "3-carene and 3-caronaldehyde: Rate constants and product yields
	Hantschke L.; Novelli A.; Bohn B.; Cho C.; Reimer D.; Rohrer F.; Tillmann R.; Glowania M.; Hofzumahaus A.; Kiendler-Scharr A.; Wahner A.; Fuchs H.
发表日期	2021
ISSN	1680-7316
起始页码	12665
结束页码	12685
卷号	21 期号:16
英文摘要	The oxidation of "3-carene and one of its main oxidation products, caronaldehyde, by the OH radical and O3 was investigated in the atmospheric simulation chamber SAPHIR under atmospheric conditions for NOx mixing ratios below 2ĝ€¯ppbv. Within this study, the rate constants of the reaction of "3-carene with OH and O3 and of the reaction of caronaldehyde with OH were determined to be (8.0±0.5)×10-11ĝ€¯cm3s-1 at 304ĝ€¯K, (4.4±0.2)×10-17ĝ€¯cm3s-1 at 300ĝ€¯K and (4.6±1.6)×10-11ĝ€¯cm3s-1 at 300ĝ€¯K, in agreement with previously published values. The yields of caronaldehyde from the reaction of OH and ozone with "3-carene were determined to be 0.30±0.05 and 0.06±0.02, respectively. Both values are in reasonably good agreement with reported literature values. An organic nitrate (RONO2) yield from the reaction of NO with RO2 derived from "3-carene of 0.25±0.04 was determined from the analysis of the reactive nitrogen species (NOy) in the SAPHIR chamber. The RONO2 yield of the reaction of NO with RO2 derived from the reaction of caronaldehyde with OH was found to be 0.10±0.02. The organic nitrate yields of "3-carene and caronaldehyde oxidation with OH are reported here for the first time in the gas phase. An OH yield of 0.65±0.10 was determined from the ozonolysis of "3-carene. Calculations of production and destruction rates of the sum of hydroxyl and peroxy radicals (ROxCombining double low lineOH+HO2+RO2) demonstrated that there were no unaccounted production or loss processes of radicals in the oxidation of "3-carene for conditions of the chamber experiments. In an OH-free experiment with added OH scavenger, the photolysis frequency of caronaldehyde was obtained from its photolytical decay. The experimental photolysis frequency was a factor of 7 higher than the value calculated from the measured solar actinic flux density, an absorption cross section from the literature and an assumed effective quantum yield of unity for photodissociation. © 2021 The Author(s).
语种	英语
scopus关键词	atmospheric chemistry; computer simulation; concentration (composition); hydroxyl radical; numerical model; ozonation; photooxidation
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/246631
作者单位	Institute of Energy and Climate Research, IEK-8: Troposphere, Forschungszentrum Jülich GmbH, Jülich, Germany
推荐引用方式 GB/T 7714	Hantschke L.,Novelli A.,Bohn B.,et al. Atmospheric photooxidation and ozonolysis of "3-carene and 3-caronaldehyde: Rate constants and product yields[J],2021,21(16).
APA	Hantschke L..,Novelli A..,Bohn B..,Cho C..,Reimer D..,...&Fuchs H..(2021).Atmospheric photooxidation and ozonolysis of "3-carene and 3-caronaldehyde: Rate constants and product yields.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(16).
MLA	Hantschke L.,et al."Atmospheric photooxidation and ozonolysis of "3-carene and 3-caronaldehyde: Rate constants and product yields".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.16(2021).