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The enrichment characteristics of mercury in the sediments of Dongjiu and Xijiu, Taihu Lake catchment, in the past century

查看全文 作　　者：WU [1]YanHong;JIANG [2]XueZhong;LIU [1]EnFeng;YAO [1]ShuChun;ZHU [1]YuXin;SUN [1,3]ZhaoBin 高影响力作者 机构地区：[1]State Key Laboratory of Lake Science and Environment,Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences,Nanjing 210008,China;[2]State Key Laboratory of Estuarine and Coastal Research,East China Normal University,Shanghai 200026,China;[3]Resource and Environment Science College of Nanjing Agricultural University,Nanjing 210095,China高影响力机构 出　　处：《Science China Earth Sciences》索引2008年第51卷第6期,共7页高影响力期刊 基　　金：the National Natural Science Foundation of China (Grant No. 40772203);Chinese Academy of Sciences (Grant No. KZCX2-YW-319);the Chinese National Key Basic Research Project (Grant No. 2002CB412303) 摘　　要：The concentration and the enrichment factors of mercury (Hg) in the sediment cores of Dongjiu and Xijiu, Taihu Lake catchment, were studied. The accumulation fluxes, anthropogenic input concentration and anthropogenic accumulation fluxes of Hg in recent 100 years were also analyzed based on the 210Pb dating. The results indicate that the increasing concentrations of Hg in the sediments are influ-enced by natural factors and anthropogenic input simultaneously. Generally, about 2/3 of the Hg in the sediment was from anthropogenic sources. In the early 20th century, the anthropogenic input was owing to the urban development and fossil fuel consumptions surrounding the Taihu Lake and the worldwide atmospheric deposition of Hg since the industrial revolution. The concentration and an-thropogenic fluxes of Hg increased with the industrial development in the catchment since the 1930s. It reached the maximum during the middle 1970s and middle 1990s, and decreased since the middle 1990s with constraints on high pollution industries. 关 键 词：Hg ENRICHMENT ANTHROPOGENIC input sediment Dongjiu and Xijiu
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