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基于土壤气调查的废弃工业场地人体健康风险评估研究
引用本文:朱苓,李志博.基于土壤气调查的废弃工业场地人体健康风险评估研究[J].环境科学与管理,2014,39(10):159-163.
作者姓名:朱苓  李志博
作者单位:伊尔姆环境资源管理咨询(上海)有限公司,上海,200080
摘    要:土壤气采样和分析是蒸气侵入评估的一个常用的工具.以某废弃化工场地为研究区,采集污染区域10个点位处的土壤气(编号SG1至SG10),并分析土壤气中的苯、乙苯、四氯化碳、三氯乙烯、四氯乙烯和三氯甲烷等挥发性有机物.根据测定的土壤气体浓度,结合Johnson &Ettinger(J&E)侵入模型评估了该废弃场地土壤气中挥发性有机物侵入带来的人体健康风险.风险评估结果表明,SG5与SG6处非致癌风险指数大于1,而10个采样点位中有9个(除SG8处)的单一污染物可接受致癌风险均超过1.0E-6.相对于非致癌风险,致癌风险存在面更加广泛,同时程度也比较严重,在进行场地再开发之前需要考虑场地修复等风险管理措施.

关 键 词:废弃工业场地  挥发性有机物  土壤气  蒸气侵入  人体健康风险评估

Soil Gas Survey Based on Brownfield Human Health Risk Assessment
Zhu Ling,Li Zhibo.Soil Gas Survey Based on Brownfield Human Health Risk Assessment[J].Environmental Science and Management,2014,39(10):159-163.
Authors:Zhu Ling  Li Zhibo
Institution:(ERM(Shanghai) Limited, Shanghai 200080, China)
Abstract:Soil gas sampling and analysis is a common tool used in vapor intrusion assessments. Soil gas samples were collect- edfrom 10 locations( SG1 to SG10) at contaminated areas within a brownfield site and analyzed for volatile organic compounds (VOCs) , including benzene, ethylbenzene, carbon tetrachloride, trichloroethene, tetrachloroethylene and chloroform etc. The hu- man health risk associatedwith the soil gas intrusion of VOCs was evaluated based on the detected soil gas concentrations data in combination with the Johnson &Ettinger(J&E) vapor intrusion model. The risk assessment results indicated that the non- carci- nogenic hazard index at locations SG -5 and SG6 were greater than 1 ,while a cancer risk greater than 1 in 1,000,000( 1.0E -6) was identified at 9 of 10 sample locations( except SG8). Compared with the non -carcinogenic contaminants, the risk associated with the carcinogenic contaminants was more extensive and significant. Therefore, it is recommended that,appropriate risk control measures would be taken prior to the future site redevelopment to eliminate or minimize the associated risks.
Keywords:brownfield  volatile organic compounds  soil gas  vapor intrusion  human health risk assessment
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