中山市水源保护地底泥重金属污染特征及生态风险评价  

Characteristics and Ecological Risk Assessment of Heavy Metal Pollution in Sediment of Water Source Protection Ground in Zhongshan City

作　　者：苏冠谕 高裕雯 卢贯能 Su Guan-yu;Gao Yu-wen;Lu Guan-neng

机构地区：[1]广东省中山市环境监测站,广东中山528400

出　　处：《化工设计通讯》2020年第6期241-242,共2页Chemical Engineering Design Communications

基　　金：中山市社会公益科技研究项目(2018B1114)。

摘　　要：分析中山市水源保护地的底泥沉积物中的重金属Cr、Cu、Cd、As、Hg、Ni、Zn、Pb的浓度,用污染指数法、潜在生态风险指数法对重金属污染程度进行评价,采用SPSS软件进行重金属相关性分析。结果表明:除Cd和As外,其他重金属元素浓度均低于土壤环境质量标准限值,其中仅Cd的生态风险影响达到中等。Pb与Cd、As、Zn、Ni元素浓度有着显著正相关,且Cu与Cr、Zn、Ni也有着显著正相关。Cd是底泥沉积物的主要污染因子。The concentration of heavy metal Cr、Cu、Cd、As、Hg、Ni、Zn、Pb in sediment of water source protection area of Zhongshan City was analyzed.The pollution index method and potential ecological risk index method were used to evaluate the degree of heavy metal pollution,and SPSS software was used to analyze the correlation of heavy metals.The results showed that except for Cd and As,the concentration of heavy metal elements was lower than the standard limit of soil environmental quality,and only Cd ecological risk impact reached medium.Pb has a significant positive correlation with the concentration of Cd、As、Zn、Ni elements,and the Cu and Cr、Zn、Ni also have a significant positive correlation.Cd is the main pollution factor of sediment.

关 键 词：底泥沉积物 重金属 潜在生态风险指数 相关性分析 

分 类 号：TQ083.4[化学工程]