气候变化领域集成服务门户(CCPortal): Effect of NOx on 1;3;5-trimethylbenzene (TMB) oxidation product distribution and particle formation

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DOI	10.5194/acp-19-15073-2019
	Effect of NOx on 1;3;5-trimethylbenzene (TMB) oxidation product distribution and particle formation
	Tsiligiannis E.; Hammes J.; Salvador C.M.; Mentel T.F.; Hallquist M.
发表日期	2019
ISSN	16807316
起始页码	15073
结束页码	15086
卷号	19 期号:23
英文摘要	Secondary organic aerosol (SOA) represents a significant fraction of the tropospheric aerosol and its precursors are volatile organic compounds (VOCs). Anthropogenic VOCs (AVOC) dominate the VOC budget in many urban areas with 1,3,5-trimethylbenzene (TMB) being among the most reactive aromatic AVOCs. TMB formed highly oxygenated organic molecules (HOMs) in an NOx-free environment, which could contribute to new particle formation (NPF) depending on oxidation conditions where elevated OH oxidation enhanced particle formation. The experiments were performed in an oxidation flow reactor, the Go:PAM unit, under controlled OH oxidation conditions. By addition of NOx to the system we investigated the effect of NOx on particle formation and on the product distribution. We show that the formation of HOMs, and especially HOM accretion products, strongly varies with NOx conditions. We observe a suppression of HOM and particle formation with increasing NOx/1TMB ratio and an increase in the formation of organonitrates (ONs) mostly at the expense of HOM accretion products. We propose reaction mechanisms and pathways that explain the formation and observed product distributions with respect to oxidation conditions. We hypothesise that, based on our findings from TMB oxidation studies, aromatic AVOCs may not contribute significantly to NPF under typical NOx/AVOC conditions found in urban atmospheres. © 2019 Author(s).
语种	英语
scopus关键词	aerosol; aerosol composition; benzene; formation mechanism; nitrogen oxides; oxidation; particle size; troposphere; volatile organic compound
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/143973
作者单位	Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden; Institute of Energy and Climate Research, Troposphere (IEK-8), Forschungszentrum Jülich GmbH, Jülich, Germany
推荐引用方式 GB/T 7714	Tsiligiannis E.,Hammes J.,Salvador C.M.,et al. Effect of NOx on 1;3;5-trimethylbenzene (TMB) oxidation product distribution and particle formation[J],2019,19(23).
APA	Tsiligiannis E.,Hammes J.,Salvador C.M.,Mentel T.F.,&Hallquist M..(2019).Effect of NOx on 1;3;5-trimethylbenzene (TMB) oxidation product distribution and particle formation.Atmospheric Chemistry and Physics,19(23).
MLA	Tsiligiannis E.,et al."Effect of NOx on 1;3;5-trimethylbenzene (TMB) oxidation product distribution and particle formation".Atmospheric Chemistry and Physics 19.23(2019).