Heavy metals in the gold mine soil of the upstream area of a metropolitan drinking water source

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	Heavy metals in the gold mine soil of the upstream area of a metropolitan drinking water source
	Cai Li; Huaijian Ding; Hongbing Ji; Lei Tang; Aixing Zhang; Xinyue Guo
刊名	Environmental Science and Pollution Research
	2016
卷号	23 期号:3 页码:2831-2847
英文摘要	Pinggu District is adjacent to the county of Miyun, which contains the largest drinking water source of Beijing (Miyun Reservoir). The Wanzhuang gold field and tailing deposits are located in Pinggu, threatening Beijing's drinking water security. In this study, soil samples were collected from the surface of the mining area and the tailings piles and analyzed for physical and chemical properties, as well as heavy metal contents and particle size fraction to study the relationship between degree of pollution degree and particle size. Most metal concentrations in the gold mine soil samples exceeded the background levels in Beijing. The spatial distribution of As, Cd, Cu, Pb, and Zn was the same, while that of Cr and Ni was relatively similar. Trace element concentrations increased in larger particles, decreased in the 50-74 mu m size fraction, and were lowest in the < 2 mu m size fraction. Multivariate analysis showed that Cu, Cd, Zn, and Pb originated from anthropogenic sources, while Cr, Ni, and Sc were of natural origin. The geo-accumulation index indicated serious Pb, As, and Cd pollution, but moderate to no Ni, Cr, and Hg pollution. The Tucker 3 model revealed three factors for particle fractions, metals, and samples. There were two factors in model A and three factors for both the metals and samples (models B and C, respectively). The potential ecological risk index shows that most of the study areas have very high potential ecological risk, a small portion has high potential ecological risk, and only a few sampling points on the perimeter have moderate ecological risk, with higher risk closer to the mining area.
学科主题	环境地球化学
语种	英语
公开日期	2017-05-22
内容类型	期刊论文
源URL	[http://ir.gyig.ac.cn:8080/handle/352002/6078]
专题	地球化学研究所_环境地球化学国家重点实验室_环境地球化学国家重点实验室_期刊论文
推荐引用方式 GB/T 7714	Cai Li,Huaijian Ding,Hongbing Ji,et al. Heavy metals in the gold mine soil of the upstream area of a metropolitan drinking water source[J]. Environmental Science and Pollution Research,2016,23(3):2831-2847.
APA	Cai Li,Huaijian Ding,Hongbing Ji,Lei Tang,Aixing Zhang,&Xinyue Guo.(2016).Heavy metals in the gold mine soil of the upstream area of a metropolitan drinking water source.Environmental Science and Pollution Research,23(3),2831-2847.
MLA	Cai Li,et al."Heavy metals in the gold mine soil of the upstream area of a metropolitan drinking water source".Environmental Science and Pollution Research 23.3(2016):2831-2847.