GC-MS/MS检测食品中沙蚕毒素类杀虫剂残留量的方法研究  

Study on the Determination of Nereistoxins Residues in Food by Gas Chromatography-Tandem Mass Spectrometry

作　　者：朱坚[1] 杨惠琴[1] 邓晓军[1] 李波[1] 

机构地区：[1]上海出入境检验检疫局,上海200135

出　　处：《分析测试学报》2008年第S1期143-144,150,共3页Journal of Instrumental Analysis

摘　　要：This paper describes method for the determination of the residues of nereistoxins in food by gas chromatography-tandem mass spectrometry(GC-MS/MS).Samples were extracted from the homogeneous sample with 0.1 mol/L HCl solution,and converted into nereistoxin in alkaline medium with sodium sulfide solution.Then the nereistoxin was extracted by chloroform,and determined by GC-MS/MS.The average recoveries of nereistoxin at the spiked concentration levels of 50-200 μg·kg-1 were range of 80%-96%.Good repeatability was obtained in all the cases with RSD of 3.0%-10.4%.The limit of determination was 0.05 mg·kg-1,and the limit of quantity was 0.1 mg·kg-1.This paper describes method for the determination of the residues of nereistoxins in food by gas chromatography-tandem mass spectrometry(GC-MS/MS).Samples were extracted from the homogeneous sample with 0.1 mol/L HCl solution,and converted into nereistoxin in alkaline medium with sodium sulfide solution.Then the nereistoxin was extracted by chloroform,and determined by GC-MS/MS.The average recoveries of nereistoxin at the spiked concentration levels of 50-200 μg·kg-1 were range of 80%-96%.Good repeatability was obtained in all the cases with RSD of 3.0%-10.4%.The limit of determination was 0.05 mg·kg-1,and the limit of quantity was 0.1 mg·kg-1.

关 键 词：GC-MS/MS nereistoxin 

分 类 号：TS207.53[轻工技术与工程—食品科学]