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对水果、蔬菜样品采用混合溶剂提取 ,对油脂样品则采用乙腈分配处理 ,然后运用柱色谱净化方式 ,以HP 1 0 1大口径弹性石英毛细管柱为分离柱 ,以电子捕获检测器检测 ,用气相色谱法测定油脂、水果、蔬菜中 2 0种有机氯农药的残留量。方法的检测限为 1 .0ng/g～ 2 0 .0ng/g ,回收率为 83.2 %～ 1 0 6.8% ,RSD为 2 .0 %～9.5%。
The samples of fruits and vegetables were extracted by mixed solvents, the samples of oils and fats were treated with acetonitrile. Then the column was purified by column chromatography using HP 1 0 1 large-diameter elastic quartz capillary column as separation column, electron capture detector and gas phase Determination of residues of 20 organochlorine pesticides in oils, fruits and vegetables by chromatography. The detection limit of this method was 1.0 ng / g ~ 200 ng / g, the recoveries were 83.2% ~ 106.8% and the RSDs were 2.0% ~ 9.5%.