气候变化领域集成服务门户(CCPortal): A comparative and experimental study of the reactivity with nitrate radical of two terpenes: Terpinene and terpinene

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DOI	10.5194/acp-20-15167-2020
	A comparative and experimental study of the reactivity with nitrate radical of two terpenes: Terpinene and terpinene
	Fouqueau A.; Cirtog M.; Cazaunau M.; Pangui E.
发表日期	2020
ISSN	1680-7316
起始页码	15167
结束页码	15189
卷号	20 期号:23
英文摘要	Biogenic volatile organic compounds (BVOCs) are intensely emitted by forests and crops into the atmosphere. During the night, they react very rapidly with the nitrate radical (NO3), leading to the formation of a variety of functionalized products including organic nitrates and to large amounts of secondary organic aerosols (SOAs). Organic nitrates (ONs) have been shown not only to play a key role in the transport of reactive nitrogen and consequently in the ozone budget but also to be important components of the total organic-aerosol mass, while SOAs are known to play a direct and indirect role in the climate. However, the reactivity of BVOCs with NO3 remains poorly studied. The aim of this work is to provide new kinetic and mechanistic data for two monoterpenes (C10H16), - and -terpinene, through experiments in simulation chambers. These two compounds, which have very similar chemical structures, have been chosen in order not only to overcome the lack of experimental data butalso to highlight the influence of the chemical structure on the reactivity. Rate constants have been measured using both relative and absolute methods. They were found to be .1:20:5/1010 and (2:91:1/1011 cm3 molecule1 s1 for - and - terpinene respectively. Mechanistic studies have also been conducted in order to identify and quantify the main reaction products. Total organic nitrate and SOA yields have been determined. While organic nitrate formation yields appear to be similar, SOA yields exhibit large differences with - terpinene being a much more efficient precursor of aerosols. In order to provide explanations for this difference, chemical analysis of the gas-phase products was performed at the molecular scale. Detected products allowed for proposing chemical mechanisms and providing explanations through peroxy and alkoxy reaction pathways. © Author(s) 2020. This work is distributed under the Creative Commons Attribution 4.0 License.
英文关键词	aerosol; comparative study; experimental study; monoterpene; nitrate; reaction kinetics; volatile organic compound
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/168905
作者单位	Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA), Umr 7583, Cnrs, Université Paris-Est Créteil et Université de Paris, Institut Pierre Simon Laplace (IPSL), Créteil, France
推荐引用方式 GB/T 7714	Fouqueau A.,Cirtog M.,Cazaunau M.,et al. A comparative and experimental study of the reactivity with nitrate radical of two terpenes: Terpinene and terpinene[J],2020,20(23).
APA	Fouqueau A.,Cirtog M.,Cazaunau M.,&Pangui E..(2020).A comparative and experimental study of the reactivity with nitrate radical of two terpenes: Terpinene and terpinene.Atmospheric Chemistry and Physics,20(23).
MLA	Fouqueau A.,et al."A comparative and experimental study of the reactivity with nitrate radical of two terpenes: Terpinene and terpinene".Atmospheric Chemistry and Physics 20.23(2020).