用加速溶剂提取仪提取污染土壤中的有机氯农药  

Extraction of Organochlorine Pesticides Using ASE from Wastewater Irrigated Agricultural Soil

作　　者：朱雪梅[1] 崔艳红[1] 郭丽青[1] 龚钟明[1] 陶澍[1] 沈伟然[2] 赵喜梅[2] 韩兰香[2] 

机构地区：[1]北京大学城市与环境学系地表过程分析与模拟教育部重点实验室,北京100871 [2]天津市环境保护局,天津300191

出　　处：《环境科学》2002年第5期113-116,共4页Environmental Science

基　　金：国家自然科学基金资金资助项目 (499710 70 ;4 0 0 310 10 ;4 0 0 2 4 10 1)

摘　　要：研究加速溶剂萃取对土壤中有机氯农药的提取效果 ,并与索氏提取法进行比较 .结果表明 ,加速溶剂萃取对土壤中滴滴涕的回收率明显高于索氏提取 ,对土壤中BHC的提取能力与索氏提取相当 .用该方法测定了天津污灌区和非污灌区土壤样品中的有机氯农药残留量 .结果表明 ,α BHC、β BHC、δ BHC、γ BHC、p ,p’ DDE、p ,p’ DDD、p ,p’ DDT、o ,p’ DDT的检出率为 1 0 0 % ,这些有机氯农药在污灌旱地和稻田地的残留量分别为 7 5～ 71 1ng/ g和 3 0～ 1 6 5ng/ g .非污灌的旱地中有机氯农药的残留量为 3 1～ 1 7 6ng/g .The extraction efficiency of accelerated solvent extraction (ASE) was studied for organochlorine pesticide residuals in soil and compared with that of Soxhlet. The results showed that the efficiency of ASE was generally better than Soxhlet when used for DDT measurement, and equivalent to Soxhlet for BHCs. With ASE, organochlorine pesticide residues were detected in wastewater irrigated and non wastewater irrigated soils from Tianjin. α BHC,β BHC,δ BHC, γ BHC, p,p' DDE, p,p' DDD, p,p' DDT, o,p' DDT ranged from 7 5 to 71 1 ng/g in wastewater irrigated vegetable and maize field and from 3 0 to 16 5ng/g in wastewater irrigated paddy field. The eight pesticide residues from non wastewater irrigated vegetable and maize field was in a range of 3 1～17 6 ng/g.

关 键 词：土壤 加速溶剂 提取 有机氯农药 环境样品监测 

分 类 号：X833[环境科学与工程—环境工程]