Heavy Metal Contamination in Paddy Soils around a Pb-Zn Mining and Smelting Area and Its Relation with Soil Physicochemical Properties

详细信息   

• 责任者：Sun Rui (Key Laboratory of Water and Sediment Sciences ; MOE ; College of Environmental Sciences and Engineering ; Peking University ; Beijing 100871 ; China) ; Shu Fan
• 刊名：Acta Scientiarum Naturalium Universitatis Pekinensis
• 出版年：2012
• 卷期：48(1)
• 关键词：土地污染 ; land pollution ; 重金属 ; heavy metals ; 湖南 ; Hunan Province
• 页码：p.139-146
• 图表：6 illus., 5 tables, 28 refs.
• 分类号：1800
• issnNo：ISSN0479-8023
• isbnNo：CN11-2442/N

摘要

 
    

The heavy metal (Pb, Zn, Cr, Cu, Cd, and Hg) concentrations in paddy soils, collected from the Pb-Zn mining and smelting area of Shuikoushan in Hunan, China, were investigated. Enrichment factor and potential ecological risk index were used to evaluate the pollution level and ecological risk of heavy metals in soil. Compared with the soils in surrounding area, the soils in central area(the mining and smelting area) exhibited elevated heavy metal concentrations. The maximum heavy metal contents of Pb, Zn, Cr, Cu, Cd, and Hg in paddy soils were up to 4330.63, 4451.25, 153.75, 315.69, 34.94, and 2.379 mg/kg, respectively. The heavy metal contamination inhibited the dehydrogenase activity significantly, and the soil pH was relatively lower for soil samples with higher metal concentrations.