环鄱阳湖区高速公路周边土壤重金属特征分析

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...

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

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.