食品科学 ›› 2007, Vol. 28 ›› Issue (11): 424-427.

• 分析检测 • 上一篇    下一篇

固相萃取-气相色谱法测定农产品中嘧霉胺的残留量

 张心明, 余向阳, 洪晓月, 刘贤进   

  1. 江苏农业科学院食品质量安全检测研究所; 南京农业大学昆虫系; 江苏农业科学院食品质量安全检测研究所 江苏南京210014南京农业大学昆虫系; 江苏南京210095; 江苏南京210014;
  • 出版日期:2007-11-15 发布日期:2011-11-22

Determination of Pyrimethanil Residue in Agro-Products by SPE-GC

 ZHANG  Xin-Ming, YU  Xiang-Yang, HONG  Xiao-Yue, LIU  Xian-Jin   

  1. 1.Institute of Food Quality Safety and Detection Research, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China;2.Department of Entomology, Nanjing Agricultural University, Nanjing 210095, China
  • Online:2007-11-15 Published:2011-11-22

摘要: 建立了青菜、大米、草莓、葡萄和西红柿等样品嘧霉胺残留量的SPE-GC测定方法。样品经乙腈提取,液-液分配和SPE净化,用气相色谱分法(NPD)检测器,外标法定量。实验结果:添加浓度在0.1~2.5mg/kg之间,测得其回收率为83.44%~108.82%之间,方法的检出限为0.05mg/L,同一样品中5次测定嘧霉胺残留量的相对标准偏差小于5%。

关键词:  , 嘧霉胺, 固相萃取, 气相色谱/氮磷检测器, 回收率, 相对标准偏差

Abstract: Method for the determination of pyrimethanil residue in pakchoi, rice, strawberry, grape, and tomato by means of SPE-GC was developed, respectively. The sample of pyrimethanil in agro-products was extracted with acetonitrile, and cleaned up by liquid-liquid partition with Silica gel SPE. The final purified extract was analyzed by GC/NPD with the external standard method. The recoveries of various amounts of pyrimethanil spiked (0.1~2.5mg/kg) samples of selected agro-products are in the range of 83.44%~108.82%. The detection limit is 0.05mg/L and the RSD(n=5) ranges from of 0.93% to 4.82% .The results showed that the method meets the standard of the residue analysis.

Key words: pyrimethanil, SPE, GC/NP, recovery, RSD