Characteristics of Chemical Speciation in PM1 in Six Representative Regions in China | |
Bai, Kaixu1,2; Wu, Can1; Li, Jianjun3; Li, Ke1; Guo, Jianping4; Wang, Gehui1,2 | |
通讯作者 | Wang, Gehui(ghwang@geo.ecnu.edu.cn) |
2021-04-07 | |
发表期刊 | ADVANCES IN ATMOSPHERIC SCIENCES |
ISSN | 0256-1530 |
页码 | 14 |
摘要 | A better knowledge of aerosol properties is of great significance for elucidating the complex mechanisms behind frequently occurring haze pollution events. In this study, we examine the temporal and spatial variations in both PM1 and its major chemical constituents using three-year field measurements that were collected in six representative regions in China between 2012 and 2014. Our results show that both PM1 and its chemical compositions varied significantly in space and time, with high PM1 loadings mainly observed in the winter. By comparing chemical constituents between clean and polluted episodes, we find that the elevated PM1 mass concentration during pollution events should be largely attributable to significant increases in organic matter (OM) and inorganic aerosols like sulfate, nitrate, and ammonium (SNA), indicative of the critical role of primary emissions and secondary aerosols in elevating PM1 pollution levels. The ratios of PM1/PM2.5 are found to be generally high in Shanghai and Guangzhou, while relatively low ratios are seen in Xi'an and Chengdu, indicating anthropogenic emissions were more likely to accumulate in forms of finer particles. With respect to the relative importance of chemical components and meteorological factors quantified via statistical modeling practices, we find that primary emissions and secondary aerosols were the two leading factors contributing to PM1 variations, though meteorological factors also played important roles in regulating the dispersion of atmospheric PM. |
关键词 | PM1 pollution chemical speciation secondary aerosol field campaign |
DOI | 10.1007/s00376-020-0224-2 |
收录类别 | SCI ; SCI |
语种 | 英语 |
资助项目 | National Key RD Plan[2017YFC0212703] ; National Natural Science Foundation of China[41701413] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB05020401] |
WOS研究方向 | Meteorology & Atmospheric Sciences |
项目资助者 | National Key RD Plan ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS记录号 | WOS:000637462300001 |
出版者 | SCIENCE PRESS |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/16262 |
专题 | 粉尘与环境研究室 |
通讯作者 | Wang, Gehui |
作者单位 | 1.East China Normal Univ, Sch Geog Sci, Minist Educ, Key Lab Geog Informat Sci, Shanghai 200241, Peoples R China 2.Inst Ecochongming, 20 Cuiniao Rd, Shanghai 202162, Peoples R China 3.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710079, Peoples R China 4.Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing 100081, Peoples R China |
推荐引用方式 GB/T 7714 | Bai, Kaixu,Wu, Can,Li, Jianjun,et al. Characteristics of Chemical Speciation in PM1 in Six Representative Regions in China[J]. ADVANCES IN ATMOSPHERIC SCIENCES,2021:14. |
APA | Bai, Kaixu,Wu, Can,Li, Jianjun,Li, Ke,Guo, Jianping,&Wang, Gehui.(2021).Characteristics of Chemical Speciation in PM1 in Six Representative Regions in China.ADVANCES IN ATMOSPHERIC SCIENCES,14. |
MLA | Bai, Kaixu,et al."Characteristics of Chemical Speciation in PM1 in Six Representative Regions in China".ADVANCES IN ATMOSPHERIC SCIENCES (2021):14. |
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