土壤重金属污染综合评价-以东寨港为例  

COMPREHENSIVE EVALUATION OF HEAVY METAL POLLUTION IN THE SOIL SEDIMENTS OF DONGZHAI BAY

作　　者：管敏琳 娄小丹 楼华敏 GUAN Min-lin;LOU Xiao-dan;LOU Hua-min(Hangzhou Environmental Protection Research Institute of China Coal Technology ＆ Engineering Group,Hangzhou 311201,China)

机构地区：[1]煤科集团杭州环保研究院有限公司,浙江杭州311201

出　　处：《能源环境保护》2018年第4期46-50,共5页Energy Environmental Protection

摘　　要：以东寨港20个采样站位的土壤沉积物样品为研究对象,分析测试了总磷(TP)、总氮(TN)、总有机碳(TOC)、石油类以及Hg、Cu、Pb、Zn、Cd、Cr、As等重金属元素的含量,对土壤沉积环境状况进行了综合评价,并采用潜在生态危害指数法和单因子污染评价法对该区重金属的污染程度进行了评价。结果表明:研究区单因子污染指数(Pi)、潜在生态风险指数(ERI)的最大值分别为6.44和212.85,平均Pi、ERI值也较高,分别为1.494、114.66,反映出研究区将达到中等污染程度;各重金属元素的潜在生态危害系数大小顺序为:Hg>Cd>As>Cu>Cr>Pb>Zn,反映出研究区受Hg和Cd元素污染为主。建议该区域重视重金属Hg和Cd元素的污染治理,避免东寨港沉积环境的进一步恶化。According to 20 soil sediment samples（DZ01-DZ20） collected from Dongzhai Bay,the concentrations of total phosphorus（TP）, total nitrogen（TN）, total organic carbon（TOC）,petroleum pollutants and heavy metals（Hg, Cu, Pb, Zn, Cd, Cr, As） in the surface sediments were measured. The environmental situation of soil sediments was comprehensively evaluated.Potential ecological risk index method and single factor index method were applied to assess the extent of heavy metal pollution. The results showed that the maximum values of single factor index（Pi） and potential ecological risk index（ERI）were 6.44 and 212.85, respectively.The average values of Pi and ERI were 1.494 and 114.66, respectively, which indicated that the study areas would face moderate-extent pollution. The potential ecological risks of the heavy metals followed the order of Hg 〉Cd 〉As 〉Cu 〉Cr〉 Pb〉 Zn, which showed that the study areas were dominated by Hg and Cd pollution. It was suggested that people should pay more attention to Hg and Cd pollution control to prevent further deterioration of ecological environment in Dongzhai Bay.

关 键 词：东寨港 土壤 重金属污染 污染评价 

分 类 号：X825[环境科学与工程—环境工程]