气相色谱-离子阱二级质谱测定茶叶中的亚胺硫磷、噻嗪酮和哒螨灵  

Determination of Buprofezin,Fosmet and Pyridaben in Tea by Gas Chromatography-Ion Trap Mass Spectrometry

作　　者：上官良敏[1] 

机构地区：[1]国家茶叶质量监督检验中心,福建安溪362400

出　　处：《分析测试技术与仪器》2011年第2期123-125,共3页Analysis and Testing Technology and Instruments

摘　　要：建立了一种基于气相色谱-离子阱二级质谱（GC-MS/MS）检测茶叶中亚胺硫磷、噻嗪酮和哒螨灵残留量的方法.样品采用乙腈提取后经活性炭小柱净化,浓缩,定容后上机分析.采用HP-5MS毛细管柱分离,电子轰击电离源二级质谱监测模式检测,外标法定量.方法的线性关系良好（R不低于0.9970）,检出限在0.01-0.02mg/kg之间,3种农药添加回收率在92.0%-115.0%之间,RSD在3.0%-9.3%,方法操作简单,灵敏度高,可作为茶叶中3种农药残留量的同时测定方法.A qualitative and quantitative analytical method was developed for the determination of buprofezin,fosmet and pyridaben by solid phase extraction on gas chromatography-ion trap mass spectrometry in tea.The separation and quantitative analysis of 3 pesticides was performed by the gas chromatography-ion trap mass spectrometry.The results showed that recoveries of 3 pesticides ranged from 92.0% to 115.0%.The detection limits were in the range of 0.01~0.02 mg/kg.The method is simple,and is of high efficiency and sensitivity for the simultaneous determination of buprofezin,fosmet and pyridaben in tea sample.

关 键 词：气相色谱-离子阱二级质谱 茶叶 噻嗪酮 亚胺硫磷 哒螨灵 

分 类 号：O657.33[理学—分析化学]