食品科学 ›› 2005, Vol. 26 ›› Issue (3): 185-186.

• 分析检测 • 上一篇    下一篇

黄瓜中噻嗪酮、三唑酮残留量的测定

 王建, 贾斌, 林秋萍, 郭丽萍   

  1. 农业部农产品质量监督检验测试中心
  • 出版日期:2005-03-15 发布日期:2011-09-19

Determination of Buprofezin and Triadimefon Residues in Cucumbers by GC-MS

 WANG  Jian, JIA  Bin, LIN  Qiu-Ping, GUO  Li-Ping   

  1. The Supervision and Test Centrre of Agricultural Product Quality, Ministry of Agriculture
  • Online:2005-03-15 Published:2011-09-19

摘要: 利用气相色谱-质谱(GC-MS),电子轰击(EI)法同时测定了黄瓜中噻嗪酮、三唑酮残留量。试样经丙酮-石油醚提取,二氯甲烷萃取,无水硫酸钠干燥,浓缩。选择灵敏度高、干扰少的检测离子,用选择离子监测(SIM)方式测定了其中两种农药残留。噻嗪酮,三唑酮的检出限量分别为0.13和0.013mg/kg,标准添加(0.013~1mg/kg)的回收率为71.1%~123%,测定的相对标准偏差(RSD)为3.4%~17%。

关键词: 气相色谱-质谱, 噻嗪酮, 三唑酮, 残留分析, 黄瓜, 选择离子监测

Abstract: Buprofezin and triadimefon residues in cucumbers were determined by gas chromatography-mass spectrometry (GC- MS) with electron impact (EI) ionization. The samples were treated by extraction solvent aceton and petroleum ether, then dichloromethane.The organic phase was separated from water by adding NaCl. No clean up step was required. Buprofezin and triadimefon were analyzed by GC-MS with selected-ion monitoring (SIM). Detection limits of 2 pesticides were 0.13 and 0.013 mg/ kg. The recoveries of 2 pesticides ranged from 71.7% ~ 123%. The relative standard deviation was 6.5%~17%.

Key words: gas chromatography-mass spectrometry, buprofezin, triadimefon, pesticide residues, cucumber, selected-ion monitoring