典型化工遗留地块土壤中有机氯农药分布特征  

Distribution of Organochlorine Pesticide Residues in Soils from a TypicalAbandoned Chemical Industrial Site

作　　者：彭倩 谭印月 赵赟 王超 刘翠 Peng Qian;Tan Yinyue;Zhao Yun;Wang Chao;Liu Cui(Changzhou Environmental Protection Service Co.,Ltd.,Changzhou 213000;Jiangsu Changhuan Environmental Technology Co.,Ltd.,Changzhou 213000,China)

机构地区：[1]常州环保服务有限公司,江苏常州213000 [2]江苏常环环境科技有限公司,江苏常州213000

出　　处：《广东化工》2023年第5期155-158,共4页Guangdong Chemical Industry

摘　　要：以典型化工遗留地块为例,研究土壤中有机氯农药六六六(HCHs)及其4种同分异构体(α,β,γ,δ-HCH)分布特征。从地块121个点位共采集272个土壤样品,采样深度0~8 m。分析结果表明HCHs检出浓度范围为nd~9690.8 mg/kg,平均浓度为72.8 mg/kg,检出率为31.3%。各土层HCHs均检出,且表现出明显的垂向迁移特性,HCHs检出浓度在2.5~3 m土壤出现了峰值,检出率随着采样深度增加呈现先明显降低后缓慢升高并趋于平稳。HCHs各同分异构体中α-HCH所占质量分数(51%)、平均检出浓度(45.2 mg/kg)及检出率(28.3%)均占明显优势,土壤中没有新的HCH输入。The distribution characteristics of organochlorine pesticide HCHs and its 4 isomers(α,β,γ,δ-HCH)in soil from a typical abandoned chemical industrial site were studied.A total of 272 soil samples were collected from 121 points of 0~8 m depth.The results showed that the concentration range of HCHs was nd~9690.8 mg/kg,with average concentration 72.8 mg/kg,and the detection rate 31.3%.HCHs were detected in all soil layers,showing obvious vertical migration characteristics.The concentration of HCHs showed a peak value in the soil of 2.5~3 m depth,and the detection rate decreased obviously and increased slowly with the increase of sampling depth,and then became stable finally.The mass fraction(51%),the average detection concentration(45.2 mg/kg)and the detection rate(28.3%)of theα-HCH isomers were dominant,and no new HCH input was found in the soil.

关 键 词：有机氯农药 六六六(HCHs) 同分异构体 垂向分布 化工遗留地块 

分 类 号：TQ[化学工程]