摘要
以某有机化工原料桶清洗厂场地为研究对象,在污染区域初步识别的基础上,采集0～7.0m深的14个土样样品和1个地下水样品,利用GC/MS等检测总石油烃、重金属、挥发性有机化合物和半挥发性有机化合物的含量,并研究了其在不同功能区土壤和地下水中的分布特征。结果表明:场地内土层自上而下依次为黏土、粉质黏土及粉土,土层渗透性较差,黏土垂直渗透系数在1.53×10-5～9.04×10-8 cm/s之间,且土层孔隙大,土颗粒以0.05～0.005mm的粉粒为主;该厂清洗车间、污水管道沿线、原料桶露天堆场区域土壤和地下水受到了不同程度的污染;场地主要超标污染物为1,2-二氯丙烷、1,2-二氯乙烷、1,2,3-三氯丙烷、二氯异丙基醚等,其在土壤中的浓度分布受土壤质地的影响;对初步筛选出的具有较高风险的区域,需要进行详细的环境调查和健康风险评估,并实施必要的场地管理措施。
On the basis of the preliminary identification of the contaminated zone of a cleaning plant, the sampling plan was decided,14 soil samples and 1 groundwater sample were collected. Total petroleum hydrocarbons （TPH）, heavy metals,volatile organic compounds and semi volatile organic compounds were an- alyzed by GC-MS and other methods,and the characteristics of their distribution in the soil and groundwater of different functional areas were discussed. Results showed that：Soil permeabil and the vertical permeability coefficient ranges from 1.53 × 10^-5 to 9.04× 10^-8 cm/s ty in the field is poor the soil and groundwater of this cleaning plant are contaminated;the main pollutants are 1,2-dichloropropane, 1,2-dichloroethane, 1,2,3-trichloropropane and dichloroisopropyl ether. The distribution pattern of 1,2-dichloropropane and 1,2-dichloroethane is related with the soil texture; and to protect the health of future residents, detailed site investigation and health risk assessment should be undertaken in the high risk areas and sound management measures should be conducted.
出处
《安全与环境工程》
CAS
北大核心
2012年第6期64-68,共5页
Safety and Environmental Engineering
基金
江苏省环保科研计划项目(201015)
常州市社会发展科技计划项目(CS20100014)
关键词
有机污染场地
土壤污染
地下水污染
环境调查
风险评估
organic contaminated site
soil pollution
groundwater pollution
environmental investigation
risk assessment
