气相色谱法测定棉籽中高效氯氰菊酯残留  

Residue Determination of Beta-cypermethrin in Cotton Seed by GC

作　　者：丁蕊艳[1,2] 李瑞菊[1] 陈子雷[1] 高原 

机构地区：[1]山东省农业科学院中心实验室,山东济南250100 [2]山东大学化学与化工学院,山东济南250100 [3]山东省实验中学,山东济南250001

出　　处：《山东农业科学》2012年第8期116-118,共3页Shandong Agricultural Sciences

摘　　要：建立用气相色谱法测定棉籽中高效氯氰菊酯残留量的分析方法。样品经丙酮-石油醚(1∶1,V/V)超声提取,凝胶渗透色谱(GPC)净化,用带ECD检测器的气相色谱仪测定。高效氯氰菊酯的最低检出量为1.0×10-12g,在棉籽中的最低检出浓度为0.01 mg/kg,平均回收率在84.5%～97.4%之间,相对标准偏差为1.4%～5.9%,符合农药残留检测的要求。A method for detecting the residue of beta - cypermethrin in cotton seed by GC was estabil- ished in this paper. The samples were extracted by acetone and petroleum ether （ 1 ： 1, V/V） under ultrasonic wave, and then the extract was purified by GPC and determined by GC with ECD detector. The minimum detectable limit of beta -cypermethrin was 1.0 × 10-12 g and its minimum detectable concentration in cotton seed was 0.01 mg/kg. The recovery rate ranged from 84.5% to 97.4% and the relative standard deviation was 1.4% - 5.9%, so this method could meet the need of residue analysis of beta - cypermethrin.

关 键 词：高效氯氰菊酯 棉籽 凝胶渗透色谱 气相色谱 

分 类 号：TQ450.263[化学工程—农药化工]