A long-term chemical characteristics and source apportionment of atmospheric rainfall in a northwest megacity of Xi'an, China
文献类型：期刊论文
| 作者 | Wang, Linqing1,2; Shen, Zhenxing1,2; He, Kun1; Zhang, Tian1; Zhang, Qian1; Xu, Hongmei1; Ho, Steven Sai Hang3; Wang, Xin4 |
| 刊名 | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
 |
| 出版日期 | 2021-02-17 |
| 页码 | 11 |
| 关键词 | Atmospheric rainfall PM2 5 Water-soluble inorganic ions Sources apportionment |
| ISSN号 | 0944-1344 |
| DOI | 10.1007/s11356-021-13015-4 |
| 通讯作者 | Shen, Zhenxing(zxshen@mail.xjtu.edu.cn) |
| 英文摘要 | A long-term measurement on rainfall was conducted in urban Xi'an, China, from 2009 to 2016. The seasonal and annual variations of major inorganic components and their chemical properties in the rainfall were studied. The annual rainfall ranged from 165.3 to 916.3 mm. The pH value of the rainfall ranged from 6.36 to 7.19, with an average value of 6.70. The electric conductivity (EC) in the rainfall was in a range of 55.91 to 227.44 mu S center dot cm(-1). Ammonium (NH4+), calcium (Ca2+), nitrate (NO3-), and sulfate (SO42-) were the four major components, accounting for 88.5% of the total quantified inorganic ion concentration. Neutralization factors were determined for Ca2+ (1.03), NH4+ (0.57), Mg2+ (0.10), Na+ (0.06), and K+ (0.04). The high abundance of NH4+ that formed from its precursor of ammonia gas (NH3) suggested the contribution of agricultural fertilization. Ca2+ in the rainfall was mainly from natural sources such as soil dust, while anions of NO3- and SO42- originated from fossil fuel combustion. Source apportionment was conducted with positive matrix factorization (PMF) which identified that secondary inorganic formation, crustal dust, coal combustion, and biomass burning are the contributors to the rainfall. In between, secondary inorganic formation was the largest contributor, which accounted for 27.8-58.1% of the total sources, followed by crustal dust of 0.4-42.6%. The results of this long-term study demonstrated the decreasing trends of contributions from coal combustion and biomass burning under a series of air pollution control measures implemented by the government. However, continuous urbanization and development of the city caused substantial increases of the construction activities, inducing more crustal dusts to the environment in urban Xi'an. |
| 资助项目 | State Key Laboratory of Loess and Quaternary Geology, Chinese Academy of Sciences[SKLLQG1919] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000618943200001 |
| 出版者 | SPRINGER HEIDELBERG |
| 资助机构 | State Key Laboratory of Loess and Quaternary Geology, Chinese Academy of Sciences |
| 源URL | [http://ir.ieecas.cn/handle/361006/15967]  |
| 专题 | 地球环境研究所_黄土与第四纪地质国家重点实验室（2010~） |
| 通讯作者 | Shen, Zhenxing |
| 作者单位 | 1.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian 710049, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710049, Peoples R China 3.Desert Res Inst, Div Atmospher Sci, Reno, NV 89512 USA 4.Georgia Inst Technol, Sch Chem & Biomol Engn, Atlanta, GA 30332 USA |
| 推荐引用方式 GB/T 7714 | Wang, Linqing,Shen, Zhenxing,He, Kun,et al. A long-term chemical characteristics and source apportionment of atmospheric rainfall in a northwest megacity of Xi'an, China[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2021:11. |
| APA | Wang, Linqing.,Shen, Zhenxing.,He, Kun.,Zhang, Tian.,Zhang, Qian.,...&Wang, Xin.(2021).A long-term chemical characteristics and source apportionment of atmospheric rainfall in a northwest megacity of Xi'an, China.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,11. |
| MLA | Wang, Linqing,et al."A long-term chemical characteristics and source apportionment of atmospheric rainfall in a northwest megacity of Xi'an, China".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2021):11. |
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来源：地球环境研究所
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