湘江涓水交汇处土壤重金属污染特征及来源解析  

Characteristics and Source Analysis of Heavy Metal Pollution in Soil at Junshui Junction of Xiangjiang River

作　　者：魏薇 陈新跃[1] 徐良 WEI Wei;CHEN Xin-yue;XU Liang(School of Earth and Spatial Information Engineering,Hunan University of Science and Technology,Hunan Xiangtan 411100,China)

机构地区：[1]湖南科技大学地球科学与空间信息工程学院,湖南湘潭411100

出　　处：《广州化工》2022年第21期175-178,共4页GuangZhou Chemical Industry

摘　　要：研究区共布设5条研究剖面,12个采样点,采集96件土壤样品,检测并分析重金属元素Cd、Cu、Cr、Hg、Pb、As的含量及污染特征,地累积指数法与污染负荷指数法评价结果表明,研究区土壤总体为中度污染,2剖面与4剖面污染最重,其中6、7号采样点污染指数较高,Cd是主要贡献因子,主成分(PCA)解析来源可知,除Cr外其余元素在同一因子上有较高载荷,结合研究区位置可推断,区内重金属主要来源于工业废弃物的排放,其次为农业施肥。A total of 5 research sections,12 sampling points,96 soil samples were collected in the research area to detect and analyze the content and pollution characteristics of heavy metal elements Cd,Cu,Cr,Hg,Pb,As,and geo-accumulation index method and pollution load index.The method evaluation results showed that the overall soil in the study area was moderately polluted.Sections 2 and 4 were the most polluted.The pollution index of sampling points 6 and 7 was higher.Cd was the main contributing factor.The source of the principal component(PCA)analysis can be known.Except for Cr,other elements had higher loads on the same factor.Combining with the location of the study area,it can be inferred that the heavy metals in the area mainly come from the discharge of industrial waste,followed by agricultural fertilization.

关 键 词：土壤 重金属 污染特征 来源分析 

分 类 号：X825[环境科学与工程—环境工程]