汕头市湖库型饮用水水源地周边土壤重金属污染评价及源解析  

Pollution Assessment and Source Interpretation of Heavy Metals in Soils around Lake and Reservoir-type Drinking Water Sources in Shantou City

作　　者：曾金樱[1] 田秀芳[1] 邱星群 王一刚 张桢钰 ZENG Jin-ying;TIAN Xiu-fang;QIU Xing-qun;WANG Yi-gang;ZHANG Zhen-yu(Shantou Polytechnic,Shantou Guangdong 515041,China)

机构地区：[1]汕头职业技术学院,广东汕头515041 [2]广东省粤东技师学院,广东汕头515041 [3]汕头市环境监测站,广东汕头515041

出　　处：《环境科学导刊》2022年第1期66-70,共5页Environmental Science Survey

基　　金：2018年汕头市科技局项目(汕头市湖库型饮用水水源地周边土壤环境监测与评价);汕头职业技术学院2019年度院级科研课题“练江流域污染水体浮萍修复技术研究”(SZK2019Y05)。

摘　　要：通过对汕头市湖库型饮用水水源地秋风水库和河溪水库的准保护区、集水区土壤进行重金属Cd、Hg、As、Pb、Cr、Cu、Zn、Ni含量测定与分析,并用单项污染指数和内梅罗综合污染指数开展评价,结合相关性、主成分与聚类分析等进行源解析。结果表明:河溪水库周边土壤以重金属Cd污染为主,而秋风水库周边土壤以重金属Hg污染为主。河溪水库周边土壤的综合污染指数平均为5.770,秋风水库周边土壤的综合污染指数平均为3.837,均为重污染。另外Cd、Pb是第一主成分,归为一类,主要来自施用含镉肥料和汽车尾气;Cr、Zn、As、Ni呈显著正相关,归为一类,主要来自土壤成岩作用;Hg和Cu为第二主成分,各单独归为一类,主要来自于煤的燃烧和牲畜粪便。The contents of Cd,Hg,As,Pb,Cr,Cu,Zn and Ni in the soils of the quasi protected areas and catchments of Qiufeng reservoir and Hexi reservoir in Shantou City were determined and analyzed.The single pollution index and Nemerow comprehensive pollution index were used for evaluation.The correlation,principal component and cluster analysis were adopted for source interpretation.The results showed that the soil around Hexi reservoir was mainly polluted by Cd,while the soil around Qiufeng reservoir was mainly polluted by Hg.The average comprehensive pollution index of soil around Hexi reservoir and Qiufeng reservoir is 5.770 and 3.837,respectively.In addition,Cd and Pb were the first principal components,mainly from the application of cadmium containing fertilizer and automobile exhaust;Cr,Zn,As and Ni were positively correlated,mainly from soil diagenesis;Hg and Cu were the second principal components,mainly from coal combustion and livestock manure.

关 键 词：湖库型饮用水水源地 重金属 评价 源解析 汕头市 

分 类 号：X82[环境科学与工程—环境工程]