摘要
这项研究的研究对象为冷水江市中连乡老科技园区,采样方法采用系统布点法,共计采样点30个,对pH、铬、铅、镉、砷、锑、汞结合湖南省环境背景值为基础,使用两种污染评价方法,结合Arcgis10.3对重金属含量空间分布做出污染评价。对重金属的数据进行含量分析,并使其满足正态分布。此外,对于其污染来源用SPSS系统用相关性分析和主成分分析方法论证其污染源。其中重金属地累积指数大小顺序为汞<铬<铅<砷<锑<镉,镉、砷相关性较强。镉同样超过了国家土壤环境质量二级标准值(GB 15618-1995),重金属分布图佐证了分布规律与特点。
The research object of this study is the old science and technology park of Zhonglian Township,Lengshuijiang City.The sampling method is systematic point distribution,with a total of 30 sampling points.Based on pH,chromium,lead,cadmium,arsenic,antimony and mercury combined with the environmental background values of Hunan Province,two pollution assessment methods are used to assess the pollution of the spatial distribution of heavy metal content in combination with Arcgis10.3.Analyze the content of heavy metal data and make it meet the normal distribution.In addition,SPSS system was used to demonstrate the pollution source by correlation analysis and principal component analysis.Among them,the order of heavy metal accumulation index is Hg<Cr<Pb<As<Sb<Cd,and the correlation between Cd and As is strong.Cadmium also exceeded the national secondary standard value of soil environmental quality(GB 15618-1995).The distribution map of heavy metals supports the distribution rules and characteristics.
作者
王舒晗
任伯帜
Wang Shuhan;Ren Bozhi(School of Civil Engineering,Hunan University of Science and Technology,Xiangtan 411110,China)
出处
《广东化工》
CAS
2023年第6期125-129,共5页
Guangdong Chemical Industry
关键词
重金属分布
污染评价
含量分析
相关性分析
主成分分析
heavy metal distribution
pollution assessment
content analysis
correlation analysis
principal component analysis
