ASPE/GC-MS法测定蔬果中25种有机磷农药残留  

Determination of 25 kinds of pesticides residuces in fruits and vegetables by ASPE/GC-MS

作　　者：陈家群[1] 蔡曦[1] 钟良康[1] 丁坚强[1] 

机构地区：[1]浙江省宁波市镇海区疾病预防控制中心,浙江宁波315200

出　　处：《中国卫生检验杂志》2012年第10期2299-2301,共3页Chinese Journal of Health Laboratory Technology

基　　金：镇海区软科学研究计划项目(200952)

摘　　要：目的:建立蔬果中25种有机磷农药残留全自动固相萃取/气相色谱质谱分析方法。方法:采乙腈均浆提取样品中的有机磷类农药,通过全自动固相萃取仪提取净化,用气质联用进行分析。结果:25种有机磷农药在0.05 mg/kg～5.0 mg/kg范围内均有较好的线性,相关系数均在0.99以上,最低检出限为0.004 mg/kg,25种有机磷农药回收率加标0.5 mg/kg时,为80.2%～98.7%之间,加标1.0 mg/kg时,为74.2%～99.8%之间,变异系数RSD,加标0.5 mg/kg时,为1.1%～4.8%之间,加标1.0 mg/kg时,为1.5%～6.8%之间。结论:此法简便,快速,净化效果好,回收率高,可同时测定水果、蔬菜中的多种有机磷农药残留。Objective ：To establish a method for the determination of 25 kinds of organophosphorus pesticides re- siduces in fruits and vegetables by ASPE/GC - MS. Methods： The samples were extracted with acetonitrite solu- tion, then the extract was purified through ASPE. The collected solution was analyzed by GC - MS. Results： 25 kinds of organophosphorus pesticides gave good linearities in the range of 0.05 mg/kg - 5.0 mg/kg（ r 〉 0.99 ）. The minimum detection limint was 0. 004 mg/kg. The recovery rate and RSD were 80.2% -98.7% and 1.1% -4.8% at 0.5 mg/kg respectively, and 74.2% - 99.8% and 1.5% - 6.8% at 1.0 mg/kg respectively. Conclusion ： The method is simple, rapid with effective purification and high recovery. It is suitable for the determination of multiple organophosphorus pesticides residuces in fruits and vegetables.

关 键 词：全自动固相萃取 气质联用 残留分析 有机磷农药 果蔬 

分 类 号：O657.63[理学—分析化学]