基于环境背景值的重金属污染地块划定——以浙东沿海某典型固体废物拆解区污染土壤为例

Demarcation of Heavy Metal Contaminated Land Soil Based on the Environmental Background Value—A Case Study of Contaminated Soil in Typical Solid Waste Dismantling Area Along the Coast of East Zhejiang

摘要: 通过对浙江东部沿海某典型固体废物拆解区污染土壤的调查与分析,评价了其土壤重金属的污染程度。结果表明,与土壤环境背景值相比,研究区土壤污染较为严重,Cd、Cu中等程度以上污染土壤均在50%以上。在此基础上,重点对重金属污染土壤的划定进行了探讨,提出了适合土地质量差别化管护的污染土壤表达方法。

Abstract: Pollution of the soil in a typical solid waste dismantling area in the coastal region of east Zhejiang was investigated and analyzed,and degrees of soil heavy metal pollution were assessed.Results show that against the background values of the soil environment,the studied soil was seriously polluted,and over 50% of the soil was above moderately polluted with Cd and Cu.On such a basis,exploration of how to demarcate heavy metal contaminated soil was conducted and a whole set of polluted soil expression methods for land-quality-specific management of the soils was put forward.