Spatial and seasonal variability of water-soluble ions in PM2.5 aerosols in 14 major cities in China
文献类型:期刊论文
作者 | Cao, JJ (Cao, Junji)[3]; You, CF (You, Chen-Feng)[1,2]; Jin, ZD (Jin, Zhangdong)[3]; Cheng, MC (Cheng, Miao-Ching)[1] |
刊名 | Atmospheric Environment |
出版日期 | 2012-12-30 |
卷号 | 60页码:182-192 |
关键词 | Acid Precipitation Pm2.5 Water-soluble Ions Anthropogenic Sources Industrial Zones |
DOI | 10.1016/j.atmosenv.2012.06.037 |
文献子类 | 期刊论文 |
英文摘要 | We analyzed PM2.5 aerosols from 14 major cities in China for concentrations of water-soluble (WS) major and trace elements (Na, Mg, Ca, K, Fe, Mn, Zn, Rb, Sr, Ba, Pb, S and Cl). The main focus was to examine patterns in spatial distribution and seasonal variability. Using principal component analysis, we identified three general sources for WS-elements in aerosols as anthropogenic, seasalts and fine dust particles originating from soils. The spatial patterns identified show that anthropogenic activity is the most important factor influencing the concentration of heavy metals in aerosols. Concentrations of WS-S, Zn and Pb were correlated with the locations of major industrial zones, and regulated by topography and seasonal weather patterns. We found higher WS-metals concentrations during the winter season, probably related to coal combustion in northern China. Moderate correlations of WS-S, Zn, Pb and Cl suggest that coal combustion releases. The seasonal pattern in WS-Fe concentrations shows the importance of acid precipitation events where coal combustion contributes to additional Fe (II) deposition. The findings of this study support the argument that WS-S in fine particles enhanced the production of hydrogen ions act to reduce the pH values of precipitation. Our interpretation of these spatial and seasonal patterns in WS-major and trace elements in aerosols highlights the need for continued research on trends in acidic deposition in major industrial cities in China. |
语种 | 英语 |
源URL | [http://ir.ieecas.cn/handle/361006/10187] |
专题 | 地球环境研究所_粉尘与环境研究室 |
通讯作者 | You, CF (You, Chen-Feng)[1,2] |
作者单位 | 1.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710075, China 2.Department of Earth Sciences, National Cheng Kung University, Tainan 701, Taiwan; 3.Earth Dynamic System Research Center, National Cheng Kung University, Taiwan; |
推荐引用方式 GB/T 7714 | Cao, JJ ,You, CF ,Jin, ZD ,et al. Spatial and seasonal variability of water-soluble ions in PM2.5 aerosols in 14 major cities in China[J]. Atmospheric Environment,2012,60:182-192. |
APA | Cao, JJ ,You, CF ,Jin, ZD ,&Cheng, MC .(2012).Spatial and seasonal variability of water-soluble ions in PM2.5 aerosols in 14 major cities in China.Atmospheric Environment,60,182-192. |
MLA | Cao, JJ ,et al."Spatial and seasonal variability of water-soluble ions in PM2.5 aerosols in 14 major cities in China".Atmospheric Environment 60(2012):182-192. |
入库方式: OAI收割
来源:地球环境研究所
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