气相色谱法测定咸鱼中的敌百虫和敌敌畏  

Determination of Trichlorfon and Dichlorovos Pesticide Residues in Salt Fish by Gas Chromatography

作　　者：张卫锋[1] 洪振涛[1] 李嘉静[1] 

机构地区：[1]广州市农业标准与监测中心,广东广州510308

出　　处：《中国兽药杂志》2007年第6期14-16,共3页Chinese Journal of Veterinary Drug

摘　　要：建立了咸鱼中敌百虫、敌敌畏农药残留的气相色谱分析方法。样品采用乙腈。水（1＋1）溶液提取，加乙酸锌净化，用乙酸乙酯进行液液分配，最后采用DB-1701P或DB-5毛细管柱分离，使用气相色谱-火焰光度检测器分析。在4个添加水平的敌百虫、敌敌畏平均回收率（n=6）分别为91％。95％、90％。94．5％，相对标准偏差分别为3．82％-5．80％和3．57％-4．62％；方法的检出限为：敌百虫0．005mg／kg，敌敌畏0．005mg／kg。该方法可用于市场上咸鱼样品中敌百虫、敌敌畏的测定。Gas chromatography is set up to analyze the vestigial trichlorfon and dichlorvos in salted fish. Samples were extracted with acetonitrile and water（ 1：1 ）, were purified by zinc acetate, and were distributed by liquidliquid partition system of vinegar naphtha, then they were separated with DB-1701P or DB-5 by capillary column, and were detected by GC-FPD. The average recoveries are 91%- 95% and 90% - 94.5%, relatively deviations are 3.82%-5.80 and 3.57%-4.62%. The detection limit of this method is 0. 005mg/kg for trichlorfon and 0.005 mg/kg for dichlorvos. It is satisfied that the method was applied to detect trichlorfon and dichlorvos in salt fish in the market.

关 键 词：气相色谱法 敌百虫 敌敌畏 咸鱼 

分 类 号：S859.84[农业科学—临床兽医学]