气候变化领域集成服务门户(CCPortal): Chemical composition of fine organic aerosols during a moderate pollution event in summertime in Beijing: Combined effect of primary emission and secondary formation

CCPortal

DOI	10.1016/j.atmosenv.2020.118167
	Chemical composition of fine organic aerosols during a moderate pollution event in summertime in Beijing: Combined effect of primary emission and secondary formation
	Ren Y.Q.; Wei J.; Ji Y.Y.; Wu Z.H.; Bi F.; Gao R.; Wang X.Z.; Li H.
发表日期	2021
ISSN	1352-2310
卷号	246
英文摘要	In order to clarify the influence of primary emission and secondary formation on the organic compositions of fine aerosols during the atmospheric pollution process in summer in Beijing, an intensive field measurement were carried out at an urban site in Beijing from July 1 to July 30, 2017. Inorganic ions (SO42−, NO3−, and NH4+) and organic compounds (OM) were the most important components of PM2.5 throughout the whole sampling period, with inorganic ions having the highest concentrations during the polluted period and OM having the highest concentration during the clean period. The apportioned quantitatively primary and secondary sources accounted for an average 86 ± 12% of the measured organic carbon (OC) at the urban site, based on positive matrix factorization modeling and the tracer-based method. Coal combustion was an important primary source for OC in the polluted episode, and biomass burning was the main contributor during the clean period. β-Caryophyllene SOC (secondary OC) was the main secondary contributor for OC during summertime in Beijing. The significant amount of SOC enhanced with an increased ozone and acidification indicated that the atmospheric oxidants and the in-situ acidity of particles were important factors in the formation of SOC during period of high pollution in Beijing. © 2020 Elsevier Ltd
英文关键词	Aerosols; Atmospheric chemistry; Coal combustion; Factorization; Importance sampling; Organic carbon; Urban growth; Atmospheric oxidants; Atmospheric pollution; Chemical compositions; Field measurement; Organic compositions; Positive matrix factorization models; Primary emissions; Secondary sources; Air pollution; caryophyllene; coal; organic carbon; organic compound; ozone; acidification; aerosol; aerosol formation; atmospheric pollution; biomass burning; chemical composition; emission; summer; urban pollution; acidification; acidity; aerosol; air pollution; Article; biomass; chemical composition; China; combustion; concentration (parameter); controlled study; particulate matter 2.5; priority journal; summer; urban area; Beijing [China]; China
语种	英语
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/169043
作者单位	State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China; Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China; Collaborative Innovation Center on Atmospheric Environment and Equipment Technology, Nanjing University of Information Science and Technology, Nanjing, 210044, China
推荐引用方式 GB/T 7714	Ren Y.Q.,Wei J.,Ji Y.Y.,et al. Chemical composition of fine organic aerosols during a moderate pollution event in summertime in Beijing: Combined effect of primary emission and secondary formation[J],2021,246.
APA	Ren Y.Q..,Wei J..,Ji Y.Y..,Wu Z.H..,Bi F..,...&Li H..(2021).Chemical composition of fine organic aerosols during a moderate pollution event in summertime in Beijing: Combined effect of primary emission and secondary formation.Atmospheric Environment,246.
MLA	Ren Y.Q.,et al."Chemical composition of fine organic aerosols during a moderate pollution event in summertime in Beijing: Combined effect of primary emission and secondary formation".Atmospheric Environment 246(2021).