| Combining forms of heavy metal elements in Dianshan Lake sediments and their spatial and temporal variations |
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| 作者姓名： | Leping ZHENG Yuliang LIU Xiaoyan SHI Xianwen QIAN Lihua ZHOU Xiaoyan LIU Xinxin WU Weimin SUN |
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| 作者单位： | Department of Environmental Science and Engineering, Shanghai University, Shanghai 200444, China |
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| 摘 要： |
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| 关 键 词： | 沉积物 重金属 时空变化 湖泊 水文化学 |
Combining forms of heavy metal elements in Dianshan Lake sediments and their spatial and temporal variations |
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| Leping ZHENG Yuliang LIU Xiaoyan SHI Xianwen QIAN Lihua ZHOU Xiaoyan LIU Xinxin WU Weimin SUN.Combining forms of heavy metal elements in Dianshan Lake sediments and their spatial and temporal variations[J].Chinese Journal of Geochemistry,2006,25(B08):143-143. |
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| Abstract: | Dianshan Lake is one of the important water supply sources for Shanghai City. The contents of heavy metals in the sediments are obviously higher than those in the overlying water body. The contents of Pb in the sediments vary seasonally; with increasing depth, the contents of Cd, Pb, Cu, Cr and Fe show no variation generally, but Mn varies in the peak pattern. Cd, Pb, Cu, Cr and Fe in the sediments are present predominantly in sludge phase, but iron and manganese oxide form of Pb and organic matter-sulfide form of Cu are their respective preferential combining forms. Manganese is present largely in exchangeable form, iron-manganese oxide combined form and sludge form. The contents of the various forms of Cd, Pb, Cu, Cr and Fe tend to vary with changing season and depth. The contents of exchangeable forms of Fe and Mn vary with depth in the peak-like pattern. |
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| Keywords: | sediment heavy metal combined form spatial-temporal variation Dianshan Lake |
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