第7期收稿日期:2007-07-26;修回2007-11-20 作者簡介:張瑜(1983-,女,碩士研究生,從事環(huán)境監(jiān)測與質(zhì)量評價方面研究,(電子信箱monica8311@ ;*通訊作者,(電話025-********(電子信箱wuyizhong@ 。 POPs 污染場地土壤健康風險評價 張瑜,吳以中*,宗良綱,馮霞 (南京農(nóng)業(yè)大學資源與環(huán)境科學學院,江蘇 南京210095 摘 要:文章以常州市某化工廠為例,介紹了POPs 污染場地的健康風險評價,分別對兩種土地利用類型假設下土壤的3條暴露途 徑進行估算,重點考慮了兒童對污染土壤的敏感性,用年齡修正因子計算居民的致癌風險。結(jié)果表明兩種假設下氯丹和滅蟻靈的致癌風險都超過了可接受的風險水平,在部分高暴露點甚至超過了目標風險值的100倍,需要對場地進行修復。各暴露途徑對健康風險的貢獻按從大到小排列依次為:直接攝入土壤﹥皮膚接觸﹥呼吸攝入。文章還根據(jù)健康風險評價的公式反推出適合本污染場地的土壤初級修復目標分別為:氯丹5.2mg/kg 、滅蟻靈7.4×10-1mg/kg (工業(yè)用地;氯丹1.6mg/kg 、滅蟻靈2.7×10-1mg/kg (居住用地。 關(guān)鍵詞:健康風險評價;污染場地;POPs ;初級修復目標中圖分類號:X820.4 文獻標志碼:A 文章編號:1003-6504(200807-0135-06 Health Risk Assessment :Ca se Study of a Brownfield Contaminat- ed by POPs at Changzhou ZHANG Yu ,WU Yi-zhong *,ZONG Liang-gang ,FENG Xia (School of Resource and Environment Science ,Nanjing Agriculture University ,Nanjing 210095,China Abstracts :Methodologies for health risk assessment (HRA were applied in a brownfield on abandoned industrial site con-taminated by persistent organic pollutants (POPs at Changzhou ,east China.For the defined future land use patterns ,indus-trial (I and residential (II exposure scenarios were assumed and evaluated.HRA focused on 3typical exposure pathways by soil ,which was evaluated with regard to potential risks that may pose to humans ,especially to children.Carcinogenic risks during the first 30years of life were calculated using age-adjusted factors.Results of baseline risk assessment indicated that the potential health risk has exceeded the acceptable cancer risk.Risk from exposure via ingestion contributed most ,which far outweighed the risk via inhalation.Preliminary remedial goals were calculated under the industrial scenario of 5.2and 7.4×10-1mg/kg for chlordane and mirex respectively while 1.6and 2.7×10-1mg/kg under the residential scenario.Key words :health risk assessment (HRA ;brownfield ;persistent organic pollutants (POPs ;preliminary remedial goal 持久性有機污染物(Persistent Organic Pollutants ,POPs 由于它的高度性、生物蓄積性、半揮發(fā)性和持久性[1], 已經(jīng)成為當今一個新的全球性環(huán)境問題。2001年5月23

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