土壤环境质量指导值与标准研究Ⅳ.保护人体健康的土壤苯并[a]芘的临界浓度  

STUDY ON SOIL ENVIRONMENTAL QUALITY GUIDELINES AND STANDARDS Ⅳ.SOIL BENZO[A]PYRENE THRESHOLD CONCENTRATIONS BASED ON HUMAN HEALTH RISK ASSESSMENT

作　　者：王国庆[1] 骆永明[1] 宋静[1] 赵其国[1] 夏家淇[2] 

机构地区：[1]中国科学院南京土壤研究所土壤环境与污染修复重点实验室 [2]国家环境保护总局南京环境科学研究所,南京210042

出　　处：《土壤学报》2007年第4期603-611,共9页Acta Pedologica Sinica

基　　金：国家重点基础研究发展规划项目(2002CB410810);国家自然科学基金重点项目(40432005);中国科学院创新团队国际合作伙伴计划(XTD-Z2005-4);中荷科技战略联盟重大国际合作项目(2006DFA91940)资助

摘　　要：基于人体健康风险评估制定土壤环境质量指导值或标准是当前国际上广泛采用的方法。本文全面调研了国际上保护人体健康的土壤苯并[a]芘(B[a]P)的各类临界浓度,初步确定了量化土壤中B[a]P暴露剂量的暴露场景和暴露参数,率先提出了制定我国土壤中保护人体健康的B[a]P临界浓度的方法体系,这种方法可用来制定持久性有机污染物的土壤临界浓度。考虑了口腔摄入、皮肤接触、呼吸摄入和取食污染蔬菜摄入四个主要暴露途径,探讨了B[a]P的致癌风险水平为10-5或10-6时,农业用地、居住用地和工业用地方式下土壤中B[a]P的临界浓度,同时制定了保护地下水的土壤B[a]P的临界浓度。Human health risk assessment has been extensively employed to derive guidelines/standards for soil environmental quality around the world. Various threshold values for Bezo[ a] pyrene （B [ a] P） concentration in soil for protection of human health were introduced. Exposure scenarios and parameters of three different patterns of land use were defined to quantify health risk of human exposure to soil B[ a]P. A human-health-based methodology for deriving threshold values for B[ a]P concentration in soils was proposed for the first time in China, which should be further used to derive threshold concentrations for other persistent organic pollutants. Four exposure pathways, i. e. soil ingestion, dermal contact, soil inhalation, and consumption of contaminated vegetables, were considered in modeling for calculation. Threshold concentrations of B [ a] P at cancer risk levels of 10^-5 and 10^-6,were calculated for agricultural,residential and industrial soils, respectively. Threshold values for B[a]P concentration in soil for protection of groundwater quality were also derived based on the guidelines/standards for protection of groundwater quality.

关 键 词：污染场地/土壤 苯并[A]芘 土壤质量 指导值/标准 风险评估 

分 类 号：X651[环境科学与工程]