Spatial distribution and environmental characterization of sediment-associated metals from middle-downstream of Xiangjiang River,southern China

被引：7

作者：

郭朝晖 ^{[1
,2
,3
]}

宋杰 ^{[3
]}

肖细元 ^{[3
]}

明辉 ^{[4
]}

苗旭锋 ^{[3
]}

王凤永 ^{[3
]}

机构：

[1] Key Laboratory of Environmental Remediation and Ecological Health,Ministry of Education,Zhejiang University

[2] College of Natural Resources and Environmental Science,Zhejiang University

[3] School of Metallurgical Science and Engineering,Central South University

[4] Centre for Environmental Risk Assessment and Remediation,Mawson Lakes Campus,University of South Aust ralia

来源：

Journal of Central South University of Technology | 2010年 / 17卷 / 01期

基金：

中国国家自然科学基金;

关键词：

sediment; toxic elements; spatial distribution; environmental risk; Xiangjiang River;

D O I：

暂无

中图分类号：

X50 [一般性问题];

学科分类号：

071012 ; 0713 ; 083002 ;

摘要：

The contamination and environmental risk assessment of the toxic elements in sediments from the middle-downstream (Zhuzhou-Changsha section) of the Xiangjiang River in Hunan Province of China were studied. The results show that As, Cd, Pb and Zn are major contaminants in sediments, and average concentrations of these elements significantly exceed both the Control Standards for Pollutants in Sludge of China (GB4284-84) for agricultural use in acidic soils and the effect range median (ERM) values. The average concentrations of As, Cd and Pb in the river water slightly exceed the limit of Surface Water Environment Quality Standard (GB3838-2002). The concentrations of As and Cr in depth profiles extensively change, but slight changes are observed in Pb and Zn. Cd and Zn in most sediment samples can easily enter the food-chain and bring possible ecotoxicological risk to organisms living in sediments according to the risk assessment code.

引用

页码：68 / 78

页数：11

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