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Chemical composition of fine organic aerosols during a moderate pollution event in summertime in Beijing: Combined effect of primary emission and secondary formation

文献类型：期刊论文

作者Ren, Yan Qin1; Wei, Jie2; Ji, Yuan Yuan1; Wu, Zhen Hai1; Bi, Fang1; Gao, Rui1; Wang, Xue Zhong1; Li, Hong1,3
刊名ATMOSPHERIC ENVIRONMENT
出版日期2021-02-01
卷号246页码:10
ISSN号1352-2310
关键词Primary organic aerosol Secondary organic aerosol Organic tracers Source apportionment
DOI10.1016/j.atmosenv.2020.118167
通讯作者Li, Hong(lihong@craes.org.cn)
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 tracerbased 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. beta-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 insitu acidity of particles were important factors in the formation of SOC during period of high pollution in Beijing.
资助项目Fundamental Research Funds for Central Public Welfare Scientific Research Institutes of China, Chinese Research Academy of Environmental Sciences[2019YSKY018] ; National Natural Science Foundation of China[41907197] ; Beijing Municipal Science & Technology Commission[Z181100005418015]
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
语种英语
出版者PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号WOS:000613551600009
资助机构Fundamental Research Funds for Central Public Welfare Scientific Research Institutes of China, Chinese Research Academy of Environmental Sciences ; National Natural Science Foundation of China ; Beijing Municipal Science & Technology Commission
源URL[http://ir.igsnrr.ac.cn/handle/311030/160705]  
专题中国科学院地理科学与资源研究所
通讯作者Li, Hong
作者单位1.Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing 100012, Peoples R China
2.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
3.Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Atmospher Environm & Equip, Nanjing 210044, Peoples R China
推荐引用方式
GB/T 7714		 Ren, Yan Qin,Wei, Jie,Ji, Yuan Yuan,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]. ATMOSPHERIC ENVIRONMENT,2021,246:10.
APA Ren, Yan Qin.,Wei, Jie.,Ji, Yuan Yuan.,Wu, Zhen Hai.,Bi, Fang.,...&Li, Hong.(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,246,10.
MLA Ren, Yan Qin,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):10.

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来源：地理科学与资源研究所

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