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Characteristics of Some Heavy Metals in Acid Sulfate Topsoils, Eastern Australia

作者：

C.Lin;D.Mcconchie;R.T.Bush

单位：

关键词：

acid sulfate soil;heavy metal;ph-dependency

摘要：

Forty-five acid sulfate topsoil samples (depth ＜0.5 m) from 15soil cores at 11 locations along the New South Wales coast,Australia, were selected to investigate the chemical behavior ofZn,Mn, Cr, Co and Pb In these soils. The amount of HCl-extractable Mnwas much smaller than the mean value of the total Mn Documented forother soils. This may be attributed to enhanced mobilization of Mnfrom the soils under the Extremely acidic and seasonally floodedconditions encountered in the investigated soils The pH-dependency ofsoluble Zn and Mn was strongly affected by the availability of acidreactive Zn and Mn compounds. There were fairly gold relationshipsbetween soluble Zn and acid reactive Zn compounds, And betweensoluble Mn and acid reactive Mn compounds. Soluble Zn and soluble Mnconcentrations were Important controls on exchangeable Zn and Mnconcentrations, respectively.

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Characteristics of Some Heavy Metals in Acid Sulfate Topsoils, Eastern Australia

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