气相色谱法测定土壤、蔬菜和水果中硫丹类农药残留

Determination of endosulfan pesticides in soil,vegetable and fruit by gas chromatography

目的：测定土壤、蔬菜和水果中5种硫丹类农药残留。方法：应用毛细管气相色谱法，程序升温，μ-ECD检测器，外标法定量。结果：该法线性范围为0．001～0．1μg／ml，在此浓度范围内与峰面积呈良好的线性关系，方法的检出限为0.394～1.330μg／kg，测定的回收率为64％～106％，相对标准偏差〈14％。结论：所建立的方法简便、快速、灵敏度高，并具有良好的精密度与准确度。

Objective：To determine the endosulfan pesticides residue in soil, vegetable and fruit by gas chromatography. Methods：Programmed temperature capillary gas chromatography equipped with μ- ECD and external reference method were applied for the determination. Results：The method recovery was 64% - 106%, the RSD 〈 1.4%, and the detection limit 0. 394 - 1. 330 μg/kg. Conclusion ：The described method for determination of endosulfan pesticide residue is simple, fast and of high sensitivity and with satisfied precision and accuracy.