摘要
建立用气质联用仪同时分析大白菜中嘧霉胺、氟虫腈、哒螨灵和苯醚甲环唑等4种农药残留的分析方法。采用乙腈高速匀浆提取,过石墨化碳黑-氨基固相萃取柱净化,选用离子扫描模式分析定量。结果表明,在添加标准品浓度为0.20 mg/kg时,嘧霉胺等4种农药残留峰面积与质量浓度呈现良好的线性关系,添加回收率分别为100.55%、95.05%、93.80%、92.75%,检出限分别为0.01,0.02,0.01,0.05 mg/kg。试验方法取得了很好的线性关系且回收率较好,保证了较好的准确度和精密度。
The analyzing method that synchronously determining four pesticide residues（including Pyrimethani,Fipronil,Pyridaben and Difenoconazole） in Chinese-cabbage by means of GC-MS was developed.The pesticide residues in Chinese-cabbage were extracted by high-speed homogenate with acetonitrile,purified by Carbon/NH2 solid phase extraction column（SPE）,and quantitatively analyzed by ion scan.The results showed that when additive concentration was 0.20 mg/kg,the peak area and mass concentration of the four pesticide residues showed a great linear relationship,the fortified recovery of the four pesticide residues was 100.55%,95.05%,93.80% and 92.75%,respectively;the detection limit of the four pesticide residues was 0.01,0.02,0.01 and 0.05 mg/kg,respectively.This method obtained a great linear relationship and better recovery,meanwhile it also ensured a better accuracy.
出处
《湖南农业科学》
2011年第1期91-93,共3页
Hunan Agricultural Sciences
基金
湖南省产学研结合专项(编号:2009XK6001)
关键词
高速匀浆
固相萃取
GC-MS
high-speed homogenate
solid phase extraction（SPE）
GC-MS.
