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LIU En-feng, SHEN Ji, ZHU Yu-xin, XIA Wei-lan, PAN Hong-xi, JIN Zhang-dong. Heavy Metals and Nutrients Pollution in Sediments of Taihu Lake[J]. Acta Sedimentologica Sinica, 2004, 22(3): 507-512.
Citation: LIU En-feng, SHEN Ji, ZHU Yu-xin, XIA Wei-lan, PAN Hong-xi, JIN Zhang-dong. Heavy Metals and Nutrients Pollution in Sediments of Taihu Lake[J]. Acta Sedimentologica Sinica, 2004, 22(3): 507-512.

Heavy Metals and Nutrients Pollution in Sediments of Taihu Lake

  • Received Date: 2003-06-16
  • Rev Recd Date: 2004-09-01
  • Publish Date: 2004-09-10
  • Sedimentation rates,element concentrations and grain sizes distribution of Cores MS and DLS sediments from Taihu Lake are investigated.According to 137 Cs dating,modern accumulation rates of Cores MS and DLS are 1.7 mm/a and 0.9mm/a.The pollution history of Taihu Lake is studied based on the geochemical characteristics in Core MS sediments.Pb,Zn,As,Hg,Mn and Ni are the main pollution heavy metals,which have different pollution history and pollution degree.The concentration of As in sediments increased since 1930s'due to the private industries development,and that of Hg increased since 1940s',which is the important pollution element due to the bio-accumulative effect.Pb,Zn,Ni and Mn pollution began at late 1970s'and the concentration in sediments became higher as As and Hg.The concentration of TP increased since 1940s',and that of TN and TOC was from late 1970s',which have close correlation with the eutrophication of lake.The history of elements pollution is correspondent with the economy development in the catchment of Taihu Lake.
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  • Received:  2003-06-16
  • Revised:  2004-09-01
  • Published:  2004-09-10

Heavy Metals and Nutrients Pollution in Sediments of Taihu Lake

Abstract: Sedimentation rates,element concentrations and grain sizes distribution of Cores MS and DLS sediments from Taihu Lake are investigated.According to 137 Cs dating,modern accumulation rates of Cores MS and DLS are 1.7 mm/a and 0.9mm/a.The pollution history of Taihu Lake is studied based on the geochemical characteristics in Core MS sediments.Pb,Zn,As,Hg,Mn and Ni are the main pollution heavy metals,which have different pollution history and pollution degree.The concentration of As in sediments increased since 1930s'due to the private industries development,and that of Hg increased since 1940s',which is the important pollution element due to the bio-accumulative effect.Pb,Zn,Ni and Mn pollution began at late 1970s'and the concentration in sediments became higher as As and Hg.The concentration of TP increased since 1940s',and that of TN and TOC was from late 1970s',which have close correlation with the eutrophication of lake.The history of elements pollution is correspondent with the economy development in the catchment of Taihu Lake.

LIU En-feng, SHEN Ji, ZHU Yu-xin, XIA Wei-lan, PAN Hong-xi, JIN Zhang-dong. Heavy Metals and Nutrients Pollution in Sediments of Taihu Lake[J]. Acta Sedimentologica Sinica, 2004, 22(3): 507-512.
Citation: LIU En-feng, SHEN Ji, ZHU Yu-xin, XIA Wei-lan, PAN Hong-xi, JIN Zhang-dong. Heavy Metals and Nutrients Pollution in Sediments of Taihu Lake[J]. Acta Sedimentologica Sinica, 2004, 22(3): 507-512.
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