磺化法-气相色谱测定蔬菜中六六六、DDT残留量  

Determination of BHC and DDT in vegetable by sulfonation-gas chromatography

作　　者：朱莉萍[1] 朱涛[2] 孙军[1] 董静[1] 潘玉香[1] 

机构地区：[1]潍坊出入境检验检疫局,山东潍坊261041 [2]济宁出入境检验检疫局,山东济宁272000

出　　处：《中国卫生检验杂志》2007年第11期2009-2010,2021,共3页Chinese Journal of Health Laboratory Technology

摘　　要：目的：建立蔬菜中六六六、DDT残留量磺化-气相色谱的分析方法。方法：净化过程采用硫酸磺化法,分析了不同硫酸用量对8种农药的回收率的影响,同时加入除酸步骤,采用DB-1701毛细管柱分离,uECD检测。结果：添加浓度在0.001～0.01 mg/kg之间时,回收率（n=6）在70%～110%之间,相对标准偏差分别为1%～6%,该方法的检出限α-BHC、γ-BHC、β-BHC、δ-BHC、PP′-DDE、OP′-DDT、PP′-DDD、PP′-DDT均为0.001 mg/kg。结论：该方法步骤简单,净化效果好,具有良好的灵敏度、回收率和重现性。Objective：The method of determining BHC,DDT in vegetable was established. Methods：In the purifying process, sulfonation were used, and the relation, dosage of sulphuric acid. between the time of sulfonation and recoverties was analyzed to get rid of sulphufic acid. Results： In the range of 0. 001 - 0. 01 mg/kg, the average recoveries （ n = 6 ） were 70% - 110% with RSD of 1% - 6%. The limits of alpha - BHC, gamma - BHC,beta - BHC, delta - BHC, PP＇ - DDE, OP＇ - DDT, PP＇ - DDD, PP＇ - DDT were all 0. 001 mg/kg. Conclusion：The method has the advantage of simplicity,repeatability and sensitivity.

关 键 词：磺化法 气相色谱法 农药 蔬菜 

分 类 号：O657.71[理学—分析化学]