Chemical composition of precipitation and its spatiotemporal variations in the Three Gorges Reservoir Region
文献类型：期刊论文
| 作者 | Lu, Qunmin7; Zhao, Liang6; Li, Li1; Yang, Fumo2,3,4 ; Yang, Qingling1; Wei, Shiqiang7; Ouyang, Wenjuan2; He, Kebin5; Chen, Gangcai1,4
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| 刊名 | Huanjing Kexue Xuebao/Acta Scientiae Circumstantiae
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| 出版日期 | 2013 |
| 卷号 | 33期号:6页码:1682-1689 |
| ISSN号 | 02532468 |
| 英文摘要 | In order to understand the main chemical constituents within precipitations and their spatiotemporal variations in the Three Gorges Reservoir Region, the atmospheric precipitation samples were collected from three stations along the reservoir during 2000 to 2009. pH, conductivity, and ions were analyzed. Average pH values were 5.76, 6.03, and 5.52, and average conductivity were 117.3, 72.3, and 63.1 μS·cm-1 in Banan, Fuling and Wanzhou, respectively. The rainwater in these districts exhibited a significant acidification trend over the past decade with more serious pollution levels than those in Beijing, Chengdu, Shenzhen, and Hunan. The concentration of SO42- accounted for 77% of total anions, while NH4+ and Ca2+ were the major cations. The relatively low mass ratio of NO3- to SO42- in the three stations indicated that the type of rain acidity was still dominantly from sulfuric acid. The ionic constituents of precipitation presented clear spatial-temporal variations, due to seasonal variations in emissions and meteorology, including the rainfall intensity. The ion concentrations were higher in winter and spring and lower in summer and autumn. Precipitation pollution in the three stations exhibited a clearly decreasing trend with distance from downtown Chongqing. |
| 语种 | 中文 |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/9908]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 作者单位 | 1.Chongqing Environmental Monitor Center, Chongqing 401147, China; 2.Division of Ecological and Environmental Research on the Three Gorges, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Science, Chongqing 401122, China; 3.Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir, Chongqing Three Georges University, Chongqing 404100, China; 4.Research Center for Eco-Environmental Monitoring and Disaster Prevention of Three Gorges Reservoir, Yangtze Normal University, Chongqing 408100, China; 5.School of Environment, Tsinghua University, Beijing 100084, China 6.College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China; 7.College of Resources and Environments, Southwest University, Chongqing 400715, China; |
| 推荐引用方式 GB/T 7714 | Lu, Qunmin,Zhao, Liang,Li, Li,et al. Chemical composition of precipitation and its spatiotemporal variations in the Three Gorges Reservoir Region[J]. Huanjing Kexue Xuebao/Acta Scientiae Circumstantiae,2013,33(6):1682-1689. |
| APA | Lu, Qunmin.,Zhao, Liang.,Li, Li.,Yang, Fumo.,Yang, Qingling.,...&Chen, Gangcai.(2013).Chemical composition of precipitation and its spatiotemporal variations in the Three Gorges Reservoir Region.Huanjing Kexue Xuebao/Acta Scientiae Circumstantiae,33(6),1682-1689. |
| MLA | Lu, Qunmin,et al."Chemical composition of precipitation and its spatiotemporal variations in the Three Gorges Reservoir Region".Huanjing Kexue Xuebao/Acta Scientiae Circumstantiae 33.6(2013):1682-1689. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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