化工塑料厂遗留场地重金属与多环芳烃污染特征及评价  

Pollution Characteristics and Assessment of Heavy Metals and Polycyclic Aromatic Hydrocarbons in Brownfield Site of Chemical Plastics Factory

作　　者：王英刚[1] 王子兴 吴昊 岳景鹏 唐小涵 WANG Yinggang;WANG Zixing;WU Hao;YUE Jingpeng;TANG Xiaohan(College of Environment,Shenyang University,Shenyang 110044,China)

机构地区：[1]沈阳大学环境学院,辽宁沈阳110044

出　　处：《沈阳大学学报（自然科学版）》2024年第5期375-382,F0002,共9页Journal of Shenyang University：Natural Science

摘　　要：以辽宁省某化工塑料厂遗留场地为研究对象,分析了场地中0~14.0 m深度土壤重金属与PAHs的污染特征。采用单因子指数法与内梅罗综合污染指数法评估重金属污染水平,采用质量基准法评估PAHs的生态风险。结果表明:Pb主要分布于0~2.0 m层土壤,As在各深度土层均有广泛分布,5种高分子量PAHs(BaP、BaA、BbF、InP、DahA)均向深层土壤迁移;单因子指数及内梅罗综合污染指数显示,Pb与As在各层土壤均存在重度污染情况,污染分布特征与生产车间空间位置高度关联;质量基准法评价表明,场地东北部和西南部为无生态风险或低生态风险区,高冲车间、聚合车间及周边区域为中到高生态风险区。Taking the brownfield site of a chemical plastics factory in Liaoning Province as the research object,the pollution characteristics of heavy metals and PAHs in the soil at a depth of 0~14.0 m were analyzed.The single-factor index method and the Nemero comprehensive pollution index method were used to evaluate the level of heavy metal pollution,and the quality benchmark method was used to evaluate the ecological risk of PAHs.The results show that Pb is mainly distributed in the 0~2.0 m layer soil,and As is widely distributed in all soil depths,and the five high molecular weight PAHs(BaP,BaA,BbF,InP,and DahA)migrates to the deep soil.The single factor index and the Nemerow comprehensive pollution index show that Pb and As are severely polluted in each layer of soil,and the pollution distribution characteristics are highly correlated with the spatial location of the production workshop.The evaluation of the quality benchmark method shows that the northeast and southwest of the site are no ecological risk or low ecological risk areas,and the high-impact workshop,polymerization workshop and surrounding areas are medium to high ecological risk areas.

关 键 词：重金属 多环芳烃(PAHs) 污染特征 内梅罗综合指数 污染评价 

分 类 号：X825[环境科学与工程—环境工程]