气相色谱法-电子捕获检测器检测多种农药残留

Determination of many sorts of pesticide residue by gas chromatography with electron capture detector

目的：建立了对中药、保健品、食品中有机氯类、拟除虫菊酯类等多种农药残留的气相色谱-电子捕获检测器（GC-ECD）测定方法。方法：针对不同的样品,采用不同的提取法,选用DM-1毛细管柱,通过柱程序升温,对多种农药进行同时检测。结果：各种农药在0.01～2000 ng/ml浓度范围内与峰面积呈良好的线性关系,检出限为0.092～21.2 pg。结论：本方法快速、简便、准确,具有良好的通用性。

Objective：The residues of many sorts of organochlorines and pyethroids in traditional chinese medicines and health foods and foods were determined by gas chromatography with electron capture detector. Methods：The pesticides residues in different samples were extracted by different methods. The pesticides residues were seprated by DM - 1 column with the column temperature program. Results：Many sort of pesticides could be separated perfectly. The standard cure showed good linearity over the concentration range of 0. 01 - 2000 ng/m, respectively. The detection limit of many sorts of pesticides was 0. 092 - 21.2 pg. Condusion：The method has the advantage of being rapid, simple and accurate.