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Geochemical Characteristics of Dissolved Trace Metals in the Dongting Lake Basin,Hunan Province,China

LUO Jian-lan1,LIU Chang-ming2,GUO Ding-liang3,DENG Rui-lin4(1.Hunan Institute of Geophysical and Geochemical Exploration,Changsha 410114,China; 2.No.402 Party of Bureau of Geological Exploration and Development of Hunan Province, Changsha 410023,China;3.Institute of Geology of Hunan Province,Changsha 410007,China; 4.Bureau of Geological Exploration and Development of Hunan Province,Changsha 410011,China)  
This paper attempts to reveal the source and behavior of trace elements in the small watershed according to dissolved trace element contents and distribution characteristics in the Dongting Lake Basin.The results showed that the watershed exhibits the relative enrichment characteristics of certain elements because of differences in geological background.In the migration process,the rare-earth elements gradually increased in volume,and finally reached a characteristc balance.
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