西安市革命公园土壤重金属含量及污染评价  

Concentration determination and contamination evaluation for heavy metals in the soil of Geming park in Xi′an

作　　者：徐甜甜[1] 孙先锋[1] 沈旭丰[1] 刘舒[1] 

机构地区：[1]西安工程大学环境与化学工程学院,陕西西安710048

出　　处：《西安工程大学学报》2011年第4期523-526,共4页Journal of Xi’an Polytechnic University

基　　金：陕西省教育厅专项科研计划项目(09JK458)

摘　　要：对西安市革命公园表层土壤中Cu、Ni、Zn、Cr、Cd及Pb等6种重金属的含量状况及形态分布进行取样调查,并对其污染状况进行分析与评价.结果显示,革命公园的表层土壤呈碱性,并含有较多有机质;土壤中Cu、Ni、Zn、Cr、Cd及Pb平均含量分别为27.30mg/kg,26.01mg/kg,90.29mg/kg7,1.06mg/kg0,.184mg/kg及51.61 mg/kg;除Pb外,土壤中Cu、Ni、Zn、Cr及Cd形态分布均以残渣态为主;革命公园土壤内梅罗污染指数为2.70,说明革命公园土壤中重金属污染已经达到中度污染,其中Pb元素污染程度最严重.Heavy metal concentration and chemical speciation of Cu,Ni,Zn,Cr,Cd and Zn were analyzed for the surface soil samples taken from the Geming park in Xi′an,and the heavy metal pollution level was evaluated by single pollution index and Nemero pollution index.The result shows that the soil appears alkaline and contains plenty of organic matter,and the average concentrations of Cu,Ni,Zn,Cr,Cd and Pb are 27.30mg/kg,26.01mg/kg,90.29mg/kg,71.06 mg/kg,0.184 mg/kg and 51.61 mg/kg respectively.The chemical speciation of Cu,Ni,Zn,Cr and Cd mainly exist in residual forms except Pb.The average Nemero index is 2.70,that is the soil has been moderately polluted by heavy metals.And the Soil contaminated by Pb is the most severe.

关 键 词：公园土壤 重金属 污染指数 污染评价 形态分布 

分 类 号：X825[环境科学与工程—环境工程]