峨眉河流域土壤重金属元素污染评价  

Evaluation of Soil Heavy Metal Element Pollution in the Emei River Basin

作　　者：刘凡[1] 徐婷 袁亚林 梁馨苇 LIU Fan;XU Ting;YUAN Ya-lin(College of New Energy Materials and Chemistry,Leshan Normal University,Leshan,Sichuan 614004)

机构地区：[1]乐山师范学院新能源材料与化学学院,四川乐山614004

出　　处：《安徽农业科学》2024年第1期36-38,共3页Journal of Anhui Agricultural Sciences

摘　　要：应用原子荧光分光光度法和原子吸收分光光度法测定重金属As、Hg、Cu、Zn、Ni、Pb、Cd和Cr在峨眉河流域土壤中的分布情况,根据单因子污染指数法和内梅罗综合污染指数法,并结合国家土壤环境质量标准GB 15618-2018进行分析和评价峨眉河流域土壤的重金属污染程度。结果表明,As、Hg、Cu、Zn、Ni、Pb、Cd和Cr含量分别为1.48~4.64、0.14~0.36、34.00~370.00、212.00~818.00、0.00~2.00、5.00~53.00、0.10~1.20、0.00~476.00 mg/kg。变异系数显示Cu和Pb的分布最不均匀,受人类活动影响较为强烈;而土壤中Cu、Zn含量普遍超标,按单因子污染指数污染程度依次为Zn>Cu>Cd>Hg>Cr>Pb=As>Ni。The distribution of heavy metals As,Hg,Cu,Zn,Ni,Pb,Cd and Cr in the soil of the Emei River Basin was determined using atomic fluorescence spectrophotometry and atomic absorption spectrophotometry.The heavy metal pollution level of the soil in the Emei River Basin was analyzed and evaluated based on the single factor and Nemero comprehensive pollution index methods,combined with the Soil Environmental Quality standard(GB 15618-2018).The results showed that the contents of As,Hg,Cu,Zn,Ni,Pb,Cd and Cr were 1.48-4.64,0.14-0.36,34.00-370.00,212.00-818.00,0.00-2.00,5.00-53.00,0.10-1.20,0.00~476.00 mg/kg,respectively.The coefficient of variation showed that the distribution of Cu and Pb was the most uneven and strongly influenced by human activities.The contents of Cu and Zn in soil were generally exceeding the standard,and the pollution degree of single factor pollution index was Zn>Cu>Cd>Hg>Cr>Pb=As>Ni.

关 键 词：土壤 重金属 污染评价 峨眉河流域 

分 类 号：X53[环境科学与工程—环境工程]