程序升温大体积进样气质联用法测定大米中农药残留的研究  

Determination of fifteen pesticide residues in rice by gas Chromatography-Mass-Mass spectrometry with programmed temperature vaporization and large volume injection

作　　者：王菡[1,2] 凌云[1] 朱子健[1] 曹远银[2] 储晓刚[1] 

机构地区：[1]中国检验检疫科学研究院,北京100123 [2]沈阳农业大学,沈阳110161

出　　处：《食品安全质量检测学报》2009年第1期39-44,共6页Journal of Food Safety and Quality

基　　金：科技部"十一五"重大支撑项目课题农兽药残留确证检测技术研究2006BAK02A08

摘　　要：实验将程序升温汽化(PTV)与大体积进样(LVI)方式相结合,建立了气相色谱串联二级质谱法测定大米中15种农药残留的方法。探讨了具有溶剂排空模式PTV在去除基质中的作用。通过对分流排空量、排空时间、吹扫时间及其进样体积等PTV参数的优化,提高了检测灵敏度。The method of Programmed Temperature Vaporization and Large Volume Injection was developed for the determination of fifteen pesticide residues in rice.Discussed the effect of solvent vent mode Programmed Temperature Vaporization on getting rid of matrix.With optimizing the condition of split vent flow,vent end time,purge time and injection volume,the reliability of quantification GC-MS-MS analysis could be improved.

关 键 词：大体积进样 农药残留 大米 程序升温蒸发 气相色谱一质谱一质谱 

分 类 号：TS210.7[轻工技术与工程—粮食、油脂及植物蛋白工程]