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气相色谱测定鱼肉中有机氯农药的前处理方法的比较
Comparision of pretreatment methods for GC-ECD determination of organochlorine pesticides in fish
【摘要】 研究了用气相色谱─电子铺俘器法测定鱼肉中有机氯农药的四种不同前处理方法。通过向鱼样中加入三种不同保留时间的有机氯农药(α-六氯苯、狄氏剂、滴滴涕),并测定三种不同浓度(0.01、01、1)(mg/kg)时加标回收率。这四种前处理方法分别是提取法、分离法、S色谱法、和F色谱法。结果显示:用F色谱法作为前处理鱼样能获得较好的回收率(82%~109%),适宜于鱼样中这三种农药的测定.
【Abstract】 This paper studied four pretreatment methods by adding three different retention time organochlorine pesticides (α-BHC. Dieldrin, pp’-DDT ) to fish sample and making different concentration (0.01. 0. 1, 1 ) (mg/kg ), then using GC-ECD determinate its recoveries. These pretreatment meth0ds are Acetonehexane Extraction;Acetonitrile Partition isilicagel Cleanup Column and Froligel PR Cleanup Column method.The result showes that after Froligel PR Cleanup Column for pretreatment fish sample can get good recover ies (82%~ 109% ) which are compared to other method for these three organochlorine pesticides deternimation.
【Key words】 Organochlorine pesticides; Gas chromatography; Fish; Pretreatment;
- 【文献出处】 环境科学与技术 ,ENVIRONMENTAL SCIENCE AND TECHNOLOGY , 编辑部邮箱 ,2000年01期
- 【分类号】X835
- 【被引频次】6
- 【下载频次】267