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- W2360822900 abstract "Lake surface sediment samples were collected from 9 sites in Wuliangsuhai lake in January 2011 to investigate heavy metal speciation,bioavailability and influence of changing the physical-chemical properties.The chemical speciation of nine heavy metals(Cu,Zn,Pb,Cr,Cd,Hg and As) was studied based on the BCR fractionation.Bioavailability of heavy metals was evaluated by mobility factor(MF) and transport factor(MJ).The ratio of secondary phase to primary phase(RSP) was calculated to assess severity of metal pollution in sediments.The results showed that the heavy metals in MF were in the order of CdHgZnCu PbAsCr and in MJ were in the order of CdHgZnCuAsPbCr.The different chemical species of heavy metals were affected at different levels of significance and sediments properties.Total content is the most important factor affecting on the residual fraction.pH,organic matter and salinity are the primary factor affecting on acid extractable and organic combination fraction.Total nitrogen and total phosphorus are the primary factor affecting on organic combination fraction.From the chemical speciation of heavy metal evaluation,the pollution levels of seven heavy metals exclude the Cd is not serious.The heavy metals in KRSP were in the order of Cd(1.66)Cu(0.84)Hg(0.72)Zn(0.42)Cr(0.15)Pb(0.14)As(0.06).The transport and bioavailability and pollution risk of Cd is biggest based on the results,followed by the Hg pollution.So,more attention should be paid to Cd and Hg pollution." @default.
- W2360822900 created "2016-06-24" @default.
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- W2360822900 date "2013-01-01" @default.
- W2360822900 modified "2023-09-28" @default.
- W2360822900 title "Bioavailability and environment pollution evaluation of sediments heavy metals in Wuliangsuhai lake" @default.
- W2360822900 hasPublicationYear "2013" @default.
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