上海浦东某氯代烃场地地下水污染现状调查  

Investigation of chlorinated hydrocarbons in groundwater from a typical contaminated site in Pudong District,Shanghai

作　　者：陆强[1] 李辉[1] 林匡飞[1] 刘勇弟[1] 吕树光[1] 

机构地区：[1]华东理工大学资源与环境工程学院,国家环境保护化工过程环境风险评价与控制重点实验室,上海200237

出　　处：《环境科学学报》2016年第5期1730-1737,共8页Acta Scientiae Circumstantiae

基　　金：国家自然科学基金(No.41003031;41273109);环保部公益性行业科研专项(No.200909089;201109013);教育部高校博士点基金优先发展领域项目(No.20110074130002);上海市青年科技启明星计划项目(No.12QA1400800);中国博士后科学基金资助项目(No.2012M510811);中央高校基本科研业务费专项资金(No.WB1014004)~~

摘　　要：氯代烃曾经广泛用作工业清洗剂,由于过度使用和储存不当,造成严重的土壤和地下水污染.本研究选取上海浦东某1,1,1-三氯乙烷(1,1,1-TCA)污染场地作为研究对象,连续5年观测了75个监测井的地下水样品氯代烃分布.采用吹扫捕集和气相色谱联用法检测了地下水样品中氯代烃的种类和浓度,运用GMS软件构建了污染场地水文地质模型和氯代烃污染羽分布图.结果表明,氯代烃污染羽主要分布在5个区域,面积达5000 m2左右,深度主要在地下4~8 m的粘土层中,污染土壤和地下水总量为50000 m3左右;2号区域的污染情况最为严重,氯代烃浓度范围为10~1700 mg·L^(-1),发现50 m3左右的自由相(DNAPL).研究结果将为揭示该场地污染物迁移转化规律,为后续的人体健康风险评估和制定修复方案提供数据支撑.Chlorinated hydrocarbons （CHs） as cleaning solvents in manufacturing factories widely contaminate soil and groundwater due to their extensive usage and inappropriate disposal practices. This study is focused on a site contaminated by 1,1,1-Trichloroethane （ 1,1,1-TCA ） in Pudong district, Shanghai. CHs in groundwater samples from 75 monitoring wells during 5 years were determined using purge/trap-GC system, and the hydrologic model of the site and the map of CHs plume distribution were constructed by Groundwater Modeling Software （ GMS ）. The results show that 5 plumes of contaminated groundwater covered an area about 5000 m2 with volume of 50000 m3 , located in the 4 ～ 8 m clay bed underground. The concentration of CHs in the No. 2 plume ranged from 10 to 1700 mg·L-1 , including about 50 m3 of dense non-aqueous phase liquid （DNAPL）. This study gives insight into the migration and transformation of CHs in the site.

关 键 词：氯代烃 污染场地 地下水 污染调查 

分 类 号：X523[环境科学与工程—环境工程]