【摘要】 文章对广西大新锰矿区的土壤进行了调查研究,通过对矿区土壤中重金属元素(Pb、Cr、Zn、Cu、Cd、Mn)含量的系统测定,运用地积累指数法对矿区土壤重金属污染进行初步评价。结果表明:矿区各采样区受到重金属污染严重,其中精矿堆和尾矿区最为严重。就各元素的污染程度来看,Mn和Cd的污染级别达到6级,污染程度为极严重污染,Zn、Pb、Cu为中等污染。各重金属污染程度排序为:Mn>Cd>Zn>Cu>Pb>Cr。更多还原

【Abstract】 An extensive ecological survey and sampling of soils were conducted in Daxin Mine wastelands,Guangxi.Based on the heavy metal concentrations(Pb,Cr,Zn,Cu,Cd and Mn)in soils from the Mn mine area,the heavy metal contamination of soils was assessed using geo-accumulation(Ige)oindex.Results shows that the mine wastelands are polluted seriously by heavy metals.The most serious pollution is found in the manganese concentrate heaps and tailing pond.Regarding to the pollution of individual metal element,the gradings of Igeo of Mn and Cd reach to 6,which indicate that the soil pollution of Mn and Cd is most serious,and pollution by Zn,Pb,and Cu is at moderate degree,with pollution degree as Mn>Cd>Zn>Cu>Pb>Cr.更多还原