大豆、花生中异丙甲草胺残留量检测技术研究

Study for the detection technology of metolachlor residues in soybeans and peanuts

目的:建立大豆、花生中异丙甲草胺残留量的检测技术。方法:采用超声波提取、硅镁吸附剂固相萃取小柱净化样品,毛细管柱气相色谱,电子捕获检测器进行分析。结果:方法的检出限为0.04 mg/kg,回收率为87.0%～98.2%,相对标准偏差为1.82%～5.82%。结论:该方法具有准确度高、精密度好,能够满足大豆、花生中异丙甲草胺残留量的检测要求。

Objective：The detection technology of Metolachlor residues in Soybeans and Peanuts was established.Methods： The metolachlor residues were detected by capillary column gas chromatography and electron capture detector after the samples were purified by using ultrasonic extraction and solid-phase extraction of silicon magnesium adsorbent.Results： The detection limit is 0.04 mg/kg,the recovery rate is 87.0%~98.2%,the relative standard deviation is 1.82%~5.82%.Conclusion： The method has high accuracy and good precision.It can meet the needs of testing metolachlor residues in the soybeans and peanuts.