贾晓洋;姜林;夏天翔;钟茂生;张丽娜;王建飞;刘辉;

• 1:北京市环境保护科学研究院
• 2:北京市勘察设计研究院有限公司

摘要(Abstract)：

为探讨不同模型对污染场地健康风险评估结果的影响,以苯并[a]芘为例,采用RBCA、CLEA和CalTOX模型对某工业污染场地表层土壤进行健康风险评估,分析了评估结果的差异和原因,同时对模型的主要暴露参数进行了敏感性分析,并推导出基于风险概率分布的土壤修复限值。结果表明,RBCA、CLEA和CalTOX模型计算的苯并[a]芘致癌总风险分别为2.40×10-4、6.32×10-4和7.04×10-6,且经口摄入和皮肤接触2个途径对人体健康造成的危害最大。降解作用是影响CalTOX模型风险评估结果不同于RBCA和CLEA模型的重要因素,3个模型间参数取值及方法学的差异也会导致风险评估结果不同。各模型暴露参数的敏感性排序也有差异。采用基于风险概率分布的方法推导土壤修复限值,RBCA、CLEA和CalTOX模型所得结果分别为0.18、0.08、0.13(不考虑降解作用CalTOX模型)和10.74(考虑降解作用CalTOX模型)mg·kg-1,为各模型直接推导值的1.5～2.6倍。基于风险概率分布的方法可有效降低风险评估过程中参数不确定性的影响,为工业污染场地土壤修复值的制定提供参考。

关键词(KeyWords)： RBCA模型;CLEA模型;CalTOX模型;苯并[a]芘;污染场地;健康风险评估;敏感性分析;风险概率分布

Abstract:

Keywords:

基金项目(Foundation): 环保公益性行业科研专项(201009032);; 北京市科技计划(Z101109003810001)

作者(Author): 贾晓洋;姜林;夏天翔;钟茂生;张丽娜;王建飞;刘辉;

Email:

DOI:

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