Chemical speciation and pollution characteristics of soil mercury in mercury deposit area of Western Hunan-Eastern Guizhou

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	Chemical speciation and pollution characteristics of soil mercury in mercury deposit area of Western Hunan-Eastern Guizhou
	Wang Wu-Yi; Li Hai-Rong; Yang Lin-Sheng; Li Yong-Hua
	2007
英文摘要	By the BCR extraction procedures and HG-ICP-AES technique, the chemical speciation and pollution characteristics of soil mercury in typical mercury deposit areas of Western Hunan-Eastern Guizhou were studied. It was found that the concentrations of mercury in soils are dominated by residual form, followed by organic-sulfide form. Fe-Mn oxides and acid-exchangeable form are rather low. The percent of the four mercury species in soils are 85.77%, 12.44%, 0.93% and 0.86%, respectively. The total concentrations and each species of mercury in soils show positive relationship with the concentration of sands, and negative relationship with the concentration of clays in soils. They also increase with the soil pH value. Mercury concentration in soils has spatial changes. In general, the concentrations in the surface soil are higher than those of sub-surface soils. Furthermore, the concentrations rapidly decrease with the distance from the pollution source increased and vary among different soil samples from different location and land use type. The results indicated that exogenous mercury pollution caused by human activities provides significant influence on environmental toxicity and pollution characteristics of mercury in soils of mercury deposit area.
出处	Huanjing Kexue/Environmental Science
卷	28 期:3 页:654-658
收录类别	EI
语种	英语
内容类型	EI期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/24792]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Wang Wu-Yi,Li Hai-Rong,Yang Lin-Sheng,et al. Chemical speciation and pollution characteristics of soil mercury in mercury deposit area of Western Hunan-Eastern Guizhou. 2007.