摘要
文章旨在探究许昌市表层土壤重金属污染及空间变异特征。采用梅花型多点布点法采集土壤样本,通过ICP-MS法测定重金属含量。分析结果显示,该地区土壤中7种主要重金属元素中,Cr和Cu为中等变异,其余为弱变异。变异强度依次为Cr>Cu>Pb>Zn。空间自相关距离差异显著,其中As>Cd>Zn>Hg,变程分别为30251 m、26841 m、25698 m和20968 m。在相向异性条件下,结构性元素对空间自相关距离差异的影响增强。结论为许昌市主要重金属元素中,Cr、Cu、Pb和Zn变异强度较高,As、Cd、Zn和Hg的空间自相关性较强,结构性因子加剧了土壤重金属在空间方向上的变异。
This article aims to explore the heavy metal pollution and spatial variation characteristics of surface soil in Xuchang City.Soil samples were collected using the plum blossom shaped multi-point distribution method,and heavy metal content was determined by ICP-MS.The analysis results show that among the seven main heavy metal elements in the soil of the region,Cr and Cu have moderate variation,while the rest have weak variation.The variation intensity is in the order of Cr>Cu>Pb>Zn.There is a significant difference in spatial autocorrelation distance,with As>Cd>Zn>Hg,and ranges of 30251 m,26841 m,25698 m,and 20968 m,respectively.Under the condition of anisotropy,the influence of structural elements on spatial autocorrelation distance differences is enhanced.The conclusion is that among the main heavy metal elements in Xuchang City,Cr,Cu,Pb,and Zn have high variability,while As,Cd,Zn,and Hg have strong spatial autocorrelation.Structural factors exacerbate the spatial variation of soil heavy metals.
作者
马莉
陈亚平
Ma Li;Chen Yaping(Xuchang Ecological Environmental Monitoring Center,Xuchang 461000,China)
出处
《环境科学与管理》
CAS
2024年第11期122-125,共4页
Environmental Science and Management
关键词
ICP-MS法
表层土壤
重金属污染
分布空间
变异特征
ICP-MS method
surface soil
heavy metal pollution
distribution space
variation characteristics
作者简介
马莉(1980-),女,大学本科,高级工程师,研究方向:环境监测。
