毛细管气相色谱法测定果蔬食品中21种有机磷类农药残留量  

Determination of organophosphorus pesticide multi-residues in vegetables and fruits by capillary gas chromatography

作　　者：秦珑[1] 杨梦祺 王建营[1] 姜德全 魏延华 卜成义 王扬菊 闫兴凤 丁瑞超 

机构地区：[1]总装备部后勤部防疫大队 [2]63600部队防检环监所

出　　处：《中国卫生检验杂志》2010年第1期88-90,96,共4页Chinese Journal of Health Laboratory Technology

摘　　要：目的：建立果蔬中21种有机磷类农药残留量的毛细管气相色谱快速检测方法。方法：样品经搅拌成匀浆后,利用乙腈直接萃取,浓缩干燥后丙酮定容,再通过R tx-1701毛细管柱,FPD气相色谱定性和定量。结果：21种有机磷农药在29 m in内能有效分离,定量分析呈良好的线性关系,相关系数均大于99%,在豆角、大白菜、梨中的2个添加浓度水平回收率为80.4%-93.4%,RSD为2.6%-9.9% 在R tx-1701毛细管柱上最小检测浓度为0.003-0.032 mg/kg,符合卫生标准要求。结论：该方法样品处理简单,准确度和精密度好,成本低,适合果蔬中多种有机磷类农药残留检测。Objective：To establish a method for rapid determination of 21 organophosphorus pesticide residues in vegetables and fruits by capillary gas chromatography at the same time.Methods：The sample was stirred into homogenate and extracted by acetonitrile.After the extract was concentrated,the residues were dissolved to constant volume with acetone and injected into capillary gas chromatography with Rtx-1701 and flame photometric detector for qualification and quantification.Results：The pesticides were separated from each other very well within 29 minutes.Good linearities were obtained.The recovery rates of two levels in beans,Chinese cabbages and pears were from 80.4% to 93.4% and the relative standard derivation was from 2.6% to 9.9%.The minimum detection concentration was from 0.003 to 0.032 mg/kg.Conclusion：This method is simple,rapid,accurate and reliable.It can be applied to determine the organophosphorus pesticide multi-residues in vegetables and fruits.

关 键 词：毛细管气相色谱 有机磷类农药残留 快速检测技术 

分 类 号：O657.71[理学—分析化学]