气候变化领域集成服务门户(CCPortal): Characterization of nitroaromatic compounds in atmospheric particulate matter from Beijing

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DOI	10.1016/j.atmosenv.2020.118046
	Characterization of nitroaromatic compounds in atmospheric particulate matter from Beijing
	Wang Z.; Zhang J.; Zhang L.; Liang Y.; Shi Q.
发表日期	2020
ISSN	13522310
英文摘要	Nitroaromatic compounds (NACs) have received much attention as a kind of toxic and important light-absorbing components in atmospheric PM2.5. In order to clarify the chemical composition, concentration levels and sources of NACs in the atmosphere, PM2.5 samples were collected from April 2016 to April 2017 in Beijing. Selective and non-targeted analytical method based on liquid chromatography-Orbitrap MS (LC-Orbitrap MS) was used to characterize atmospheric NACs for the first time. A total of 190 NACs were quantified and semi-quantified with authentic standards or surrogates, of which 165 NACs were identified tentatively. Nitro-polyaromatic compounds (NPCs) were identified and semi-quantified for the first time, including nitronaphthol, nitroacenaphthenol, nitrofluorenol, nitroaceanthrylenol, nitropyrenol and their methyl derivatives, etc. The seasonal average concentrations of total NACs were from 10.8 in summer to 100 ng/m3 in winter, which was higher than in many other areas. Nitrophenols (NP) and nitrocatechols (NC) were the most abundant NACs species, and the proportion to total NACs were 31% and 32%, respectively. The seasonal average concentration of NPCs ranged from 1.5 in summer to 9.6 ng/m3 in winter with an annual average contribution of 12%, which cannot be ignored. In winter, the contribution of NACs to organic matter (OM) and PM2.5 were up to 2.88‰ and 1.59‰, respectively. Four major sources were assigned, coal combustion and secondary formation had the highest contribution of 35%, followed by biomass combustion (32%), dust (18%), and transportation (6%). © 2020 Elsevier Ltd
英文关键词	LC-Orbitrap MS; Nitro-polyaromatic compounds; Nitroaromatic compounds; Sources
语种	英语
scopus关键词	Aromatic compounds; Atmospheric chemistry; Coal dust; Coal transportation; Liquid chromatography; Particles (particulate matter); Absorbing components; Atmospheric particulate matter; Average concentration; Biomass combustion; Chemical compositions; Concentration levels; Methyl derivatives; Nitroaromatic compound; Coal combustion
来源期刊	Atmospheric Environment
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/145195
作者单位	State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing, 102249, China; Patent Examination Cooperation Center of the Patent Office, SIPO, Guangzhou, 510530, China
推荐引用方式 GB/T 7714	Wang Z.,Zhang J.,Zhang L.,et al. Characterization of nitroaromatic compounds in atmospheric particulate matter from Beijing[J],2020.
APA	Wang Z.,Zhang J.,Zhang L.,Liang Y.,&Shi Q..(2020).Characterization of nitroaromatic compounds in atmospheric particulate matter from Beijing.Atmospheric Environment.
MLA	Wang Z.,et al."Characterization of nitroaromatic compounds in atmospheric particulate matter from Beijing".Atmospheric Environment (2020).