废弃农药生产场地土壤六六六残留特征  

Residual Characteristics of HCHs in Soils of a Typical Pesticide Industrial Site

作　　者：古瑞 秦勇军 卢再亮 陈信如 席海苏 朱小龙 Gu Rui;Qin Yongjun;Lu Zailiang;Chen Xinru;Xi Haisu;Zhu Xiaolong(Guizhou Environment and Engineering Appraisal Center,Guiyang 550001,China;Appraisal Center for Ecology and Environmental Engineering of Chongqing,Chongqing 401121,China;Management and Service Center for Solid Waste of Chongqing Co.,Ltd.,Chongqing 401121,China)

机构地区：[1]贵州省环境工程评估中心,贵阳550001 [2]重庆市生态环境工程评估中心,重庆401121 [3]重庆市固体废物管理服务中心有限公司,重庆401121

出　　处：《环境影响评价》2020年第5期85-88,共4页Environmental Impact Assessment

基　　金：重庆市科技计划项目(cstc2018jszx-cyzdX0019);贵州省生态环境厅环境科技项目。

摘　　要：采集西南某小型退役农药厂不同深度的土壤样品,使用GC-MS方法分析了土壤中六六六(HCHs)各个异构体的含量。检测结果表明,土壤六六六含量介于nd^114.00mg/kg之间(平均值为12.88mg/kg),主要分布在1米以内土层中,这与研究场地农药生产时间较短密切相关;土壤中六六六四种异构体均有不同程度的检出,检出率和平均含量由高到低依次为β-HCH、α-HCH、δ-HCH、γ-HCH。总体来看,本研究场地土壤受到了比较明显的六六六污染,土壤α-HCH和β-HCH含量最大值已经超过了《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)的第二类用地管制值,故必须采取相应的风险控制措施或者治理修复保障环境安全。Soil samples were collected from a typical pesticide industrial site in Southwest,China,and the hexachloro-cyclohexane soprocide(HCHs)were analyzed with GC-MS to understand the residual level in soil.The results show that the residual concentrations of HCHs in soils were nd^114.00 mg/kg(with a mean of 12.88 mg/kg),mainly distributed in the soil layer within 1m,which was closely related to the shorter production time of pesticides in the site.The four isomers of HCHs in soil were obviously detected,the detection rate and average contents wereβ-HCH,α-HCH,δ-HCH,γ-HCH from high to low.Generally speaking,the soil of this study site has been obviously polluted by HCHs,and the maximum content ofα-HCH andβ-HCH in the soil has exceeded the intervention values for the classⅡland use in Soil environmental quality risk control standard for soil contamination of development land(GB 36600—2018),therefore,it is necessary to remedy and ensure environmental safety.

关 键 词：农药生产场地 六六六(HCHs) 异构体 

分 类 号：X592[环境科学与工程—环境工程]