气相色谱法测定茶叶中多种有机磷农药残留量  

Determination of Organophosphorus Pesticide Multi-residues in Tea by Gas Chromatography

作　　者：张莹[1] 黄志强[1] 李拥军[1] 

机构地区：[1]湖南出入境检验检疫局,湖南长沙410007

出　　处：《色谱》2001年第3期273-275,共3页Chinese Journal of Chromatography

摘　　要：采用微量化学法和全自动固相萃取技术 ,建立了气相色谱法同时测定茶叶中 14种有机磷农药残留量的方法 ,并对样品的前处理作了一定的探讨。结果表明 ,采用程序升温 ,所测定的 14种有机磷农药在SPBTM 170 1石英毛细管柱上得到了很好的分离 ,且方法快速、灵敏 ,完全符合实际应用需要。An efficient gas chromatographic method for the determination of 14 organophosphorus pesticide residues in tea by gas chromatography using micro chemical and solid phase extraction technique has been established The organophosphorus pesticides were extracted from tea samples with ethyl acetate and mixture of ethyl acetate hexane(1∶1, V/V ) The extracts were cleaned up with a column of 3 mL Supelclean Envl carb by GILSON ASPEC XL The 14 organophosphorus pesticides were separated from each other through SPB TM 1701 capillary column(30 m×0 53 mm i.d.×1 0 μm) and determined by flame photometric detector The recoveries ranged 70 8% 120% when the added levels were from 0 100 mg/kg to 1 00 mg/kg, the RSD was 2% 7% and the limits of detection were 0 01 mg/kg 0 08 mg/kg This method is rapid, sensitive and suitable for the analysis of pesticide residues It can also be applied to the determination of organophosphorus pesticide multi residues in other plant samples such as vegetables, fruits and so on

关 键 词：气相色谱法 微量化学法 固相萃取 有机磷农药 茶叶 残留量测定 

分 类 号：TS272.7[农业科学—茶叶生产加工] TS207.53[轻工技术与工程—农产品加工及贮藏工程]