作　　者： ; (薛丽）;

机构地区： 广东省梅州市质量计量监督检测所广东梅州514072

出　　处： 《现代食品科技》 2012年第8期1088-1090,926,共4页

摘　　要： 建立了蔬菜干制品中18种有机磷农药和拟除虫菊酯农药残留的在线凝胶渗透色谱-气相色谱/质谱(GPC-GC/MS)分析方法。样品以乙腈为提取剂超声波高速匀浆提取,提取液经ENVI-Carb固相萃取柱净化,除去样品中大部分的色素等干扰基质,再经在线GPC进一步净化除去大分子干扰物质,有效降低了样品基质带来的背景干扰。采用外标法定量,在质量浓度为0.02 mg/kg^0.5mg/kg有良好的线性关系,加标水平为0.4 mg/kg时,18种农药的回收率基本都在80%~130%,相对标准偏差小于10%,检出限为0.001mg/kg^0.026 mg/kg。经实验证明,该方法是一种快速,准确,灵敏度高的同时检测梅菜干中多种农药残留的检测方法。 An on-line gel permeation chromatography-GC/MS analytical method was developed for the determination of 18 organic phosphorus pesticide and pyrethroid pesticides in dried vegetables.The samples were extracted with acetonitrile by means of ultrasonic high-speed homogenization, cleaned up by an ENVI-Carb solid phase extraction column to remove pigment in the sample and analyzed by on-line gel permeation chromatography-GC/MS. All the compounds demonstrated good linear relationship in the range of 0.02-4）.5 mg/kg. The recoveries for the most ofpestive standards of 0.4 mg/kg were 80%-130% and the relative standard deviations were less than 10%. The limits of detection were from 0.001 mg/kg to 0.026 mg/kg. The method was rapid, accurate and highly sensitive, which can be used for the simultaneous determination of pesticide residues in dried vegetables.

关 键 词： 在线凝胶渗透色谱 气相色谱质谱 固相萃取 有机磷农药 拟除虫菊酯 梅菜干

领　　域： [轻工技术与工程] [轻工技术与工程]