上海市典型疏浚泥重金属生态风险评价  

Ecological Risk Evaluation of Heavy Metals of the Typical Dredged Mud in Shanghai

作　　者：唐庆丽[1] 程金平[1] 高昊旻 姚磊 蒋真毅 吴旸 谢翠松 梁海 王鹤 皮帅帅[1] 余朝毅[1] 

机构地区：[1]上海交通大学环境科学与工程学院,上海200240 [2]上海市海洋业务受理中心,上海200050

出　　处：《环境科学》2013年第4期1340-1344,共5页Environmental Science

基　　金：上海市海洋局项目资助项目(沪海科2012-02;沪海科2011-02)

摘　　要：为了探讨上海典型疏浚泥中重金属的生态风险,本研究利用生态风险指数法对黄浦江、长江口、内河航道疏浚泥中Hg、Cd、Cu、Pb、As、Cr和Zn进行风险评价.结果表明,7种重金属的潜在生态风险系数(Eir)从大到小平均值分别为20.05、17.49、8.82、5.71、4.68、1.74和1.13,均属轻微生态危害;从采样区域来看各区域重金属的Eir均小于40,属轻微生态危害;从采样点来看,除内河航道和长江口个别点Cd(1个点)和Hg(4个点)Eir>40,属于中度生态危害或强生态危害,其余均为轻微生态危害.从潜在生态风险指数(ERI)的评价结果来看:疏浚泥中重金属潜在生态风险较低,均属于轻微生态危害;内河航道、长江口和黄浦江码头前沿的ERI分别为81.4、57.7和52.5,均属于轻微生态危害.In order to discuss the potential ecological risk of heavy metals of the typical dredged mud in Shanghai,the Hakanson potential ecological risks method was used to analyse and assess the potential ecological risks of heavy metals,including Hg,Cd,Cu,Pb,As,Cr and Zn in dredged mud from the following three areas—the dock apron of Huangpu River,the mouth of the Yangtze River and inland waterways.The results showed that the mean values of ecological risk index（Eir） of the seven heavy metals are 20.05,17.49,8.82,5.71,4.68,1.74 and 1.13,respectively,all of which belonged to the low ecological risk;Cd（one location in inland waterways） and Hg（three locations in the mouth of the Yangtze River and one location in inland waterways） are the most hazardous elements,with the Eir40,which belonged to the medium ecological risk or the high ecological risk,and other elements belonged to the low ecological risk.From the results of ecological risk indices（ERI） of the heavy metals in Shanghai dredged mud,the risk of the heavy metals belonged to the low ecological risk.The ERI of inland waterways,the mouth of the Yangtze River and the dock apron of the Huangpu River were 81.4,57.7 and 52.5,respectively,which all belong to the low ecological risk.

关 键 词：上海 疏浚泥 重金属 生态风险评价 

分 类 号：X524[环境科学与工程—环境工程]