硫酸锰渣污染土壤中重金属的形态分布及生物活性  

Speciation Distribution and Biological Activity of Heavy Metals in Manganese Sulphate Residue-Polluted Soil

作　　者：粟银[1,2] 袁兴中[2] 曾光明[2] 李惠萌[2] 李莲[2] 

机构地区：[1]吉首大学生物资源与环境科学学院,湖南吉首416000 [2]湖南大学环境科学与工程学院,湖南长沙410082

出　　处：《化工环保》2009年第4期300-303,共4页Environmental Protection of Chemical Industry

基　　金：湖南省重点科技项目(06SK2012)

摘　　要：测定了硫酸锰渣污染土壤中Cu,Zn,Cd,Pb,Mn的总量和各形态含量。结果表明重金属总量远超过环境背景值和土壤环境二级标准。重金属各形态分布特征:Cu,有机态>残渣态>铁锰氧化态>碳酸盐态>可交换态;Zn,残渣态>铁锰氧化态>有机态>碳酸盐态>可交换态;Cd,铁锰氧化态>可交换态>碳酸盐态>残渣态>有机态;Pb,铁锰氧化态>残渣态>有机态>碳酸盐态>可交换态;Mn,铁锰氧化态>残渣态>可交换态>有机态>碳酸盐态。重金属的生物可利用性系数和迁移系数均为Cd>Mn>Pb>Cu>Zn。The total amount of Cu, Zn, Cd, Pb, Mn in soil polluted by manganese sulphate residue and the contents of each species of these heavy metals were determined. The distribution characteristics of the heavy metal species were analyzed. The results indicate that the total amount extremely exceeds that of the environment background and the second grade of soil environment quality standard. The distribution characteristics of the heavy metal species are as following orders ： Cu, organically bounded species 〉 residua species 〉 Fe-Mn oxide species 〉 carbonate species 〉 exchangeable species; Zn, residua species 〉 Fe-Mn oxide species 〉 organically bounded species 〉 carbonate species 〉 exchangeable species; Cd, Fe-Mn oxide species 〉 exchangeable species 〉 residua species 〉 carbonate species 〉 organically bounded species; Pb, Fe-Mn oxide species 〉 residua species 〉 organically bounded species 〉 carbonate species 〉 exchangeable species; Mn, Fe-Mn oxide species 〉 residua species 〉 exchangeable species 〉 organically bounded species 〉 carbonate species. The orders for coefficients of bioavailability and migration of heavy metals are both Cd 〉 Mn 〉 Pb 〉Cu 〉 Zn.

关 键 词：硫酸锰 废渣 污染 土壤 重金属 形态 生物活性 

分 类 号：X502[环境科学与工程—环境工程]