凝胶渗透色谱净化—气相色谱法测定奶油中有机氯农药残留  

Determination of Organochlorine Pesticides Residues in Fresh Cream by GPC Sample Clean-up and GC-ECD

作　　者：常硕[1] 吴华[2] 

机构地区：[1]北京奶牛中心乳品质量监督检验测试中心,北京100192 [2]安捷伦科技(中国)有限公司,北京100102

出　　处：《中国畜牧兽医》2013年第S1期68-70,共3页China Animal Husbandry & Veterinary Medicine

摘　　要：作者采用凝胶渗透色谱(GPC)对奶油中8种有机氯农药进行样品前处理,气相色谱—电子捕获检测器进行测定,以保留时间定性,峰面积定量。在10~800ng/mL浓度范围内,8种有机氯农药的线性良好,相关系数在0.9981~0.9996,回收率在92.4%~117.0%,RSD在1.83%~7.92%,方法检出限为0.65~2.33μg/kg,满足奶油中有机氯农药残留检测要求。The analysis of pesticides in food and environmental samples is an important part of monitoring the condition of the environment.Gel permeation chromatography(GPC)is a convenient technique to separate small molecules from high molecular weight organic matrices.In this application,eight organochlorine pesticides residues in fresh cream are cleaned up by a GPC system using Agilent EcoSpheres material and then determined by GC-ECD.DB-35ms Ultra Inert capillary GC column and Ultra Inert inlet liner are employed and provide excellent peak shape for this trace-level pesticides analysis.The linearity ranges from 0.9981to 0.9996over the concentration of 10~800ng/mL.RSD were 1.83%to 7.92%.Method recovery and LOD are92.4%~117.0%and 0.65~2.33μg/kg,respectively.

关 键 词：GPC 奶油 有机氯农药残留 超高惰性 

分 类 号：TS252.7[轻工技术与工程—农产品加工及贮藏工程] O657.71[轻工技术与工程—食品科学与工程]