上海建设用地土壤指导限值及其应用研究

Derivation of Soil Guideline Values and Their Application in Management and Remediation of Contaminated Urban Land in Shanghai

土壤指导限值是基于健康风险的土壤污染物浓度的指示值或警告值,可用于污染土地的风险管理和修复决策。根据上海城市建设用地土壤污染和土地利用特征,利用英国的污染土地暴露评价(CLEA-UK)模型,针对住宅、娱乐、商业和工业用地等4种土地利用类型,制定了上海建设用地15种典型土壤污染指标的指导限值,阐述了土壤指导限值在上海建设用地土壤污染管理和修复中的应用,也为建立和健全我国建设用地土壤环境标准体系,加强建设用地土壤污染管理提供了新的思路和方法。

Soil guideline values （SGVs） are health risk-based indicative or warning values of soil contaminants. SGVs represent＇ intervention values＇ which indicate that soil concentrations above this level may present an unacceptable risk to the health of site users and that intervention action （such as further investigation and/or remediation） is required. SGVs can be used as an instrument for contaminated land management and remediation decision making. In this paper, SGVs were derived for fifteen contaminants in contaminated urban land in Shanghai based on four typical land-uses （including residential, recreational, commercial and industrial） by using the UK Contaminated Land Exposure Assessment （CLEA-UK） model. The application of the SGVs results in management and remediation of contaminated urban land in Shanghai was further analyzed. It is believed that developing SGVs based on the approaches and experience from other countries may be helpful for China to achieve sustainable solutions for management of contaminated urban land in China.