On the source contribution to Beijing PM2.5 concentrations | |
Zikova, Nadezda1; Wang, Yungang2; Yang, Fumo3![]() | |
刊名 | ATMOSPHERIC ENVIRONMENT
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2016-06-01 | |
卷号 | 134页码:84-95 |
关键词 | Beijing Positive Matrix Factorization Pm2.5 Traffic Coal Combustion |
ISSN号 | 1352-2310 |
DOI | 10.1016/j.atmosenv.2016.03.047 |
英文摘要 | Beijing is a city with some of the world's worst particulate air pollution. Although there have been various control strategies implemented since 1998, there are still episodes of PM2.5 concentrations of hundreds of micrograms per cubic meter. In this study, samples were collected over a year in Beijing, chemically characterized, and the resulting data analyzed for source apportionment. The new error analysis capabilities built into EPA PMF V5.0 have been employed to better evaluate the profiles and assign them to source types. Secondary sulfate, local coal combustion and secondary nitrate were the major contributors to the PM2.5 mass. However, in this study, traffic was found to be more important as a PM compared to prior studies. It was actually the largest PM2.5 source in autumn and winter although local coal combustion is also a large source of PM in the winter months. These results demonstrate the value of using the displacement method to assess the variability in source profiles to improve our interpretation of PMF results. They also suggest more attention needs to be paid to traffic emissions in Beijing. (C) 2016 Elsevier Ltd. All rights reserved. |
资助项目 | National Natural Science Foundation of China projects[41275121] ; National Natural Science Foundation of China projects[41575119] ; National Natural Science Foundation of China projects[41075093] ; National Natural Science Foundation of China projects[41375123] |
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:000375504100009 |
内容类型 | 期刊论文 |
源URL | [http://119.78.100.138/handle/2HOD01W0/2444] ![]() |
专题 | 大气环境研究中心 |
作者单位 | 1.Clarkson Univ, Potsdam, NY 13699 USA 2.GAGO Inc, San Jose, CA USA 3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China 4.Beihang Univ, Sch Space & Environm, Beijing 100191, Peoples R China |
推荐引用方式 GB/T 7714 | Zikova, Nadezda,Wang, Yungang,Yang, Fumo,et al. On the source contribution to Beijing PM2.5 concentrations[J]. ATMOSPHERIC ENVIRONMENT,2016,134:84-95. |
APA | Zikova, Nadezda,Wang, Yungang,Yang, Fumo,Li, Xinghua,Tian, Mi,&Hopke, Philip K..(2016).On the source contribution to Beijing PM2.5 concentrations.ATMOSPHERIC ENVIRONMENT,134,84-95. |
MLA | Zikova, Nadezda,et al."On the source contribution to Beijing PM2.5 concentrations".ATMOSPHERIC ENVIRONMENT 134(2016):84-95. |
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