华东某关停精细化工企业土壤污染物分布及溯源分析  

Distribution and Traceability Analysis of Soil Contaminants of a Closed Fine Chemical Plant in East China

作　　者：罗贯洋 Luo Guanyang(Chengtou Shangjing Ecological Restoration Technology Co.,Ltd.,Shanghai 200232,China)

机构地区：[1]上海城投上境生态修复科技有限公司,上海200232

出　　处：《广东化工》2024年第23期100-103,139,共5页Guangdong Chemical Industry

摘　　要：以华东地区某关停搬迁的精细化工企业地块为例,在5个生产区域共采集了40个不同深度的土壤样品,并基于污染物浓度分布垂向和平面表征,采用Pearson相关性分析和主成分分析等方法,对土壤污染物含量的空间分布规律、变异程度和相关性进行了研究分析。研究结果表明:土壤中污染物As、Cu、Ni、Pb、Hg、Sb、Be、Co、V和C10~C40的平均值超过周边土壤对照值,表明场地土壤受到一定程度的外源污染,但污染水平相对较低。相关性分析和主成分分析结果显示,研究区域土壤中Hg和C10~C40浓度的空间异质性最强,受人为影响较大,来源相对独立;元素V、Co、Ni、Sb、As、Cd和Pb相关性显著,来源于化工源和燃烧源,载荷量为45.2%;邻苯二甲酸二(2-乙基己基)酯(DEHP)与精细化工厂塑化剂的生产和使用等人为活动有关,载荷量为17.9%。Takeing a site of a shut-down and relocated fine chemical plant in East China as an example,a total of 40 soil samples at different depths were collected in 5 production areas,and based on the vertical and planar characterisation of contaminant concentration distribution,the spatial distribution pattern,degree of variation and correlation of soil contaminant content were investigated and analysed by using Pearson Correlation Analysis and Principal Component Analysis.The results showed that the mean contents of As,Cu,Ni,Pb,Hg,Sb,Be,Co,V and C10~C40 in the soil exceeded the control values,indicating that the soils have been subjected to a certain degree of exogenous contamination,but the level of contamination is relatively low.The results of correlation analysis and principal component analysis revealed that the spatial heterogeneity of Hg and C10~C40 concentrations in the soils was the strongest,which were greatly affected by anthropogenic activities,and the sources were relatively independent.The elements V,Co,Ni,Sb,As,Cd and Pb were significantly correlated,originating from chemical and combustion sources,with a load of 45.2%,and Bis(2-ethylhexyl)Phthalate(DEHP)was associated with anthropogenic activities such as the production and use of plasticisers,with a load of 17.9%.

关 键 词：精细化工 土壤污染 污染物分布 资源解析 

分 类 号：X53[环境科学与工程—环境工程]