摘要
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%。
A rapid and high performance gas chromatographic method for the determination of 20 organchlorinated pesticides in oils,fruits and vegetables has been developed.The samples of fruits and vegetables were extracted with petroleum ether acetone,while those of oils were extracted with acetonitrile hexane.The extract was purified by Florisil column with ethyl ether hexane(15∶85,V/V) or ethyl ether petroleum ether(15∶85,V/V) as eluent . Chromatographic analysis was performed on wide bore capillary column with ECD detector.Satisfactory separation and detection of these organchlorinated pesticides are presented with the proposed method.The detection limits of this method were 1.0 ng/g 20.0?ng/g(S/N=5),the recoveries 83.2% 106.8% and the relative standard deviations 2.0% 9.5%.
出处
《色谱》
CAS
CSCD
北大核心
2000年第4期346-349,共4页
Chinese Journal of Chromatography
基金
国家进出口商品检验局科技基金!资助课题
编号为K970 4
关键词
气相色谱法
有机氯农药
油脂
水果
蔬菜
残留量
gas chromatography
wide bore capillary column
organchlorinated pesticide residue
oil
fruit
vegetable
