西安市长乐公园土壤重金属含量的测定及污染评价  

Measurement and evaluation on content of heavy metal pollution of soil in Xi′an Changle park

作　　者：孙先锋[1] 吕小明[1] 孙鹏[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》2008年第3期339-342,共4页Journal of Xi’an Polytechnic University

摘　　要：用HNO3—HF—HClO4联合消煮法处理西安市长乐公园土壤样品,根据测定其中Pb,Zn,Cu,Cr,Cd等重金属的含量,得出其平均值均高于中国土壤环境背景值.相关性分析显示,Pb,Zn,Cu 3种元素之间具有较高的相关性.用单因子指数法、内梅罗污染指数法评价了西安市长乐公园土壤重金属污染程度,得出公园土壤中5种重金属处于中等污染水平.The soil samples of Xi＇an Changle park were treated with HNO3-HF-HClO method,and the contents of heavy metal were measured. The results indicate that the average content value of Pb, Zn, Cu, Cr, Cd are higher than the Chinese soil background values. According to the correlation analysis, three elements Pb, Zn and Cu are related to each other. By using the methods of single factor index and composite index, the pollution level of five heavy metals contented in Xi＇an Changle park soil were evaluated and the result shows that these five heavy metals are at a medium level.

关 键 词：长乐公园 土壤 重金属 污染 相关性 

分 类 号：X825[环境科学与工程—环境工程]