摘要
本文以某退役的化工厂遗留地块为研究对象,对其开展土壤污染状况初步调查,通过资料收集、现场踏勘与人员访谈,识别了地块疑似污染区和污染因子,制定了调查方案,采集土壤和地下水样品,检测137项土壤指标,147项地下水指标.结果表明:重金属(砷、铅、汞、铜、钒)、氨氮、氟化物、石油烃(C10—C40)、多环芳烃(苯并(a)蒽、苯并(b)荧蒽、苯并(a)芘)等11中污染物超过《土壤环境质量 建设用地土壤污染风险管控标准(试行)》(GB 36600-2018)第一类用地风险风险筛选值,氨氮、铜超过《地下水质量标准》(GB/T 14848-2017)Ⅳ类水标准限值.建议需开展土壤污染状况详细调查与健康风险评估工作.
Abstract
Through data collection,on-site investigation and personnel interviews,the suspected polluted areas and pollution factors of the plot were identified,and an investigation plan was formulated,soil and groundwater samples were collected,and 137 soil indicators and 147 groundwater indicators were detected.The results showed that 1 1 pollutants,including heavy metals(arsenic,lead,mercury,copper,vanadium),ammonia nitrogen,fluoride,petroleum hydrocarbons(C10—C40),polycyclic aromatic hydrocarbons(benzo(a)anthracene,benzo(b)fluoranthene,benzo(a)pyrene),exceeded the first class risk screening value of the Soil Environmental Quality-Soil Pollution Risk Control Standards for Construction Land(Trial)(GB 36600-2018),and ammonia nitrogen and copper exceeded the Groundwater Quality Standards(GB/T).14848-2017)Class IV water standard limits.It is suggested that a detailed investigation of soil pollution status and health risk assessment should be carried out.
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