Inter-annual variability of wintertime PM2.5 chemical composition in Xi'an, China: Evidences of changing source emissions
文献类型：期刊论文
| 作者 | Xu, Hongmei1,5; Chen, L. W. Antony2; Shen, Zhenxing5; Huang, R-J.3; Cao, Junji1,6; Chow, Judith C.1,2; Watson, John G.1,2; Ho, Kin Fai4 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2016-03-01 |
| 卷号 | 545期号:2017页码:546-555 |
| 关键词 | Pm2.5 Source Apportionment Emission Changes China Aerosols Fugitive Dust |
| DOI | 10.1016/j.scitotenv.2015.12.070 |
| 文献子类 | Article |
| 英文摘要 | Chemical characteristics of PM2.5 in Xi'an in wintertime of 2006, 2008, and 2010 were investigated. Markers of OC2, EC1, and NO3-/SO42- ratio were calculated to investigate the changes in PM2.5 emission sources over the 5-year period. Positive matrix factorization (PMF) model was used to identify and quantify the main sources of PM2.5 and their contributions. The results showed that coal combustion, motor vehicular emissions, fugitive dust, and secondary inorganic aerosol accounted for more than 80% of PM2.5 mass. The importance of these major sources to the PM2.5 mass varied yearly: coal combustion was the largest contributor (31.2% +/- 5.2%), followed by secondary inorganic aerosol (20.9% +/- 5.2%) and motor vehicular emissions (19.3% +/- 4.8%) in 2006; the order was still coal combustion emissions (27.6% +/- 3.4%), secondary inorganic aerosol (23.2% +/- 6.9%), and motor vehicular emissions (20.9% +/- 4.6%) in 2008; while coal combustion emission further decreased (24.1% +/- 3.1%) with fugitive dust (19.4% +/- 5.5%) increasing in 2010. The changes in PM2.5 chemical compositions and source contributions can be attributed to the social and economic developments in Xi'an, China, including energy structure adjustment, energy consumption, the expansion of civil vehicles, and the increase of urban construction activities. (C) 2015 Elsevier B.V. All rights reserved. |
| WOS关键词 | POSITIVE MATRIX FACTORIZATION ; FINE PARTICULATE MATTER ; POLYCYCLIC AROMATIC-HYDROCARBONS ; SOURCE APPORTIONMENT ; SOURCE IDENTIFICATION ; SEASONAL-VARIATIONS ; CARBONACEOUS AEROSOLS ; ELEMENTAL CARBON ; SOURCE PROFILES ; TRACE-ELEMENTS |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000369493000055 |
| 源URL | [http://ir.ieecas.cn/handle/361006/5843]  |
| 专题 | 地球环境研究所_粉尘与环境研究室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710061, Peoples R China 2.Univ Nevada, Desert Res Inst, Reno, NV 89506 USA 3.Paul Scherrer Inst, Lab Atmospher Chem, Villigen, Switzerland 4.Chinese Univ Hong Kong, Sch Publ Hlth & Primary Care, Hong Kong, Hong Kong, Peoples R China 5.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian 710049, Peoples R China 6.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Hongmei,Chen, L. W. Antony,Shen, Zhenxing,et al. Inter-annual variability of wintertime PM2.5 chemical composition in Xi'an, China: Evidences of changing source emissions[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2016,545(2017):546-555. |
| APA | Xu, Hongmei.,Chen, L. W. Antony.,Shen, Zhenxing.,Huang, R-J..,Cao, Junji.,...&Ho, Kin Fai.(2016).Inter-annual variability of wintertime PM2.5 chemical composition in Xi'an, China: Evidences of changing source emissions.SCIENCE OF THE TOTAL ENVIRONMENT,545(2017),546-555. |
| MLA | Xu, Hongmei,et al."Inter-annual variability of wintertime PM2.5 chemical composition in Xi'an, China: Evidences of changing source emissions".SCIENCE OF THE TOTAL ENVIRONMENT 545.2017(2016):546-555. |
入库方式： OAI收割
来源：地球环境研究所
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