城市半封闭河道水体重金属污染分配特征研究

Study on Distribution Characteristics of Heavy Metal Pollution in Semi-closed Rivers in Cities

为探讨城市半封闭河道水体重金属污染分配特征,以旴江-南丰段为研究对象,分析了分析了Cu、Zn、Cr、Pb 4种重金属在水-沉积物中的分配系数,结果表明:旴江-南丰段沉积物中Cu、Zn、Cd、Pb 4种重金属的浓度分别为53.17~63.24mg/kg、7.94~8.93mg/kg、26.13~40.13mg/kg、44.56~48.12mg/kg;河道水体中Cu污染水平最低、其他3种重金属浓度均无法满足水功能区划中相应的水质标准。研究结论可为旴江-南丰段水体重金属污染治理提供理论参考。

To explore the distribution characteristics of heavy metal pollution in semi-closed rivers in city,this paper takes the Xujiang of Nanfeng section as the research object,the partition coefficients of Cu、Zn、Cr and Pb in water-sediment were analyzed.Results showed that the concentrations of Cu、Zn、Cd and Pb in sediments were 53.17~63.24 mg/kg,7.94~8.93 mg/kg,26.13~40.13 mg/kg,and 44.56~48.12 mg/kg.The Cu pollution level in water is lowest,while the concentration of other three heavy metals cannot meet the corresponding water quality standards in the water function zoning.The results can provide a theoretical reference for the treatment of heavy metal pollution in water.