长江安徽段冲积土壤重金属污染评价及源解析  

Assessment and source apportionment of heavy metal pollution in alluvial soils of the Anhui section of the Yangtze River

作　　者：梅曼 张俊 雷俊生 杨富雨 王小康 MEI Man;ZHANG Jun;LEI Jun-sheng;YANG Fu-yu;WANG Xiao-kang(School of Resources and Civil Engineering,Suzhou University,Suzhou 234000,China)

机构地区：[1]宿州学院资源与土木工程学院,安徽宿州234000

出　　处：《环境生态学》2025年第2期31-39,共9页Environmental Ecology

基　　金：安徽教育厅重点科研项目(2023AH052238);安徽省教育厅优秀青年教师培育一般项目(YQYB2023052);2023年度宿州市科技计划项目(SZKJXM202309);宿州学院博士(后)科研启动基金项目(2022BSK010、2024BSH005);宿州学院大学生创新创业训练计划项目(YBXM23-032)资助。

摘　　要：为探明长江(安徽段)冲积土壤重金属污染特征和来源,利用电感耦合等离子体质谱仪(ICP-MS)测定土壤中V、Cr、Mn、Ni、As、Cd、Pb、Cu和Zn共9种重金属含量,分析了其含量特征,结合内梅罗综合污染指数法、单因子污染指数法和地质累积指数法对土壤中的重金属污染特征进行分析,并利用绝对主成分-多元线性回归模型(APCS-MLR)定量解析各重金属污染来源。结果表明,研究区土壤中Cu、Pb、As未超过铜陵市土壤背景值,Cr、Mn、Ni、Cd、Zn含量平均值超过铜陵市土壤背景值的1.07~15.34倍,重金属污染严重;土壤中重金属含量差异较大,其中Cr、Mn、Ni平均值达到381.49 mg/kg、1 109.50 mg/kg和386.51 mg/kg,变异系数分别为3.51、0.32和4.23,Cr和Ni属于强变异;基于APCS-MLR模型的源解析结果表明,V、As、Pb、Zn、Mn来源主要是工业、农业、交通运输的综合源,Cr、Ni和Cu来源主要为地质活动和成土母质风化的自然源,Cd的来源相对复杂。In order to investigate the characteristics and sources of heavy metal pollution in alluvial soils of the Yangtze River(Anhui section),the contents of nine heavy metals,V,Cr,Mn,Ni,As,Cd,Pb,Cu and Zn,were determined by inductively coupled plasma mass spectrometer(ICP-MS).Combined with Nemerow comprehensive pollution index method,single factor pollution index method and geological accumulation index method,the characteristics of heavy metal pollution in soil were analyzed,and the absolute principal component-diversity regression model(APCS-MLR)was used to quantitatively analyze the sources of heavy metal pollution.The results show that Cu,Pb and As of the soil in the study area do not exceed the soil background value of Tongling City,and the average value of Cr,Mn,Ni,Cd and Zn is 1.07~15.34 times of the corresponding soil background value of Tongling City,indicating serious heavy metal pollution.The average values of Cr,Mn and Ni are 381.49 mg/kg,1109.50 mg/kg and 386.51 mg/kg respectively,and the coefficients of variation are 3.51,0.32 and 4.23 respectively.Cr and Ni belong to intensity variation.The results of source analysis based on APCS-MLR model show that the sources of V,As,Pb,Zn and Mn are mainly industrial agricultural and transportation sources,while Cr,Ni,and Cu mainly stem from natural sources,including geological activities and weathering of the parent material,and the sources of Cd are relatively complex.

关 键 词：冲积土壤 重金属污染 源解析 APCS-MLR 长江安徽段 

分 类 号：X825[环境科学与工程—环境工程]