环鄱阳湖区高速公路周边土壤重金属特征分析  

An Analysis of Features of Heavy Metal in the Soil of the Highway around Poyang Lake Region

作　　者：吴刚[1] 郑明新[1] 

机构地区：[1]华东交通大学道桥与岩土工程研究所,江西南昌330013

出　　处：《华东交通大学学报》2011年第4期89-93,共5页Journal of East China Jiaotong University

基　　金：江西省自然科学基金(2009BSB08701)

摘　　要：通过对环鄱阳湖地区周边昌九、南昌东绕城、梨温、景鹰、九景5条高速公路沿线土壤表层0~10 cm重金属Zn,Cu,Pb,Cr,Cd含量的调查研究,以江西省表层土壤背景值和国家环境质量标准中Ⅰ类土壤环境质量标准为评价标准分析该区段污染程度和潜在的生态风险。结果表明,5种重金属离子土壤浓度依次为：Zn〉Cr〉Cu〉Pb〉Cd,污染程度依次为：Cd〉Cu〉Pb〉Zn〉Cr;除Cd污染程度属于轻度污染外,其他重金属离子的污染程度都在尚清洁和安全范围。从数据上来看,湖区南部重金属离子含量分布略高于北部。5类重金属潜在生态危害指数都处于较低值,其中Cd的潜在单线污染指数最高。By studying the content of the heavy metals Zn,Cu,Pb,Cr,Cd in the 0~10cm surface soil of the five highway which are respectively in Changjiu,Nanchang East Loop,Liwen,Jingying,Jiujing around the Poyang Lake region,the degree of pollution and the potential ecological risks are analyzed based on surface soil background value in Jiangxi Province and Class I standards in the national environmental quality standards.The result shows that the degree of soil concentration of these 5 heavy metal ions is ZnCrCuPbCd,the degree of pollution is CdCuPbZnCr.Cd pollution is slight.The pollution degree of other heavy metal ions concentration is in the sphere of cleaness and safety.The distribution of heavy metal ion content decreases gradually from the south to the north in the region.The potential ecological risk of the 5 heavy metals is in a lower index value,but the single potential pollution of Cd is in the highest index.

关 键 词：环鄱阳湖 高速公路周边 重金属 污染评价 

分 类 号：X53[环境科学与工程—环境工程] X825