食品科学 ›› 2008, Vol. 29 ›› Issue (12): 605-609.

• 分析检测 • 上一篇    下一篇

高效液相色谱法测定鸡蛋、牛奶和猪肉中环丙氨嗪及三聚氰胺的实验研究

 魏瑞成, 王冉, 刘伟荣   

  1. 江苏省农科院江苏省畜禽产品安全性研究重点实验室;
  • 出版日期:2008-12-15 发布日期:2011-12-08

Study on Analytical Method of Cyromazine and Melamine Residues in Egg,Milk and Pork with HPLC

 WEI  Rui-Cheng, WANG  Ran, LIU  Wei-Rong   

  1. Key Laboratory of Animal-derived Food Safety of Jiangsu Province,Jiangsu Academy of Agricultural Science,Nanjing 210014,China
  • Online:2008-12-15 Published:2011-12-08

摘要: 本实验研究建立用NH2柱和97%乙腈水溶液做流动相洗脱测定鸡蛋、猪肉和牛奶中环丙氨嗪和三聚氰胺残留量的高效液相色谱法,样品均质后经NaOH和20%氨水乙腈溶液重复提取2次、浓缩、过C18固相萃取小柱净化等处理后上机检测,环丙氨嗪和三聚氰胺得到了很好的分离,各自的保留时间分别是8min和12min。标准曲线在0.01~1.0μg/ml浓度范围内呈线性相关,环丙氨嗪、三聚氰胺标准曲线的相关系数(r)分别为0.9999、0.9994。检测限为0.02mg/kg,定量限低于0.05mg/kg。

关键词: 环丙氨嗪, 三聚氰胺, 残留, 高效液相色谱法

Abstract: A high-performance liquid chromatography(HPLC) with NH2 column and 97% acetonitrile-water as mobile phase to determine the cyromazine and melamine residues in egg,milk and pork was described in this paper. Samples were treated with NaOH,extracted with acetonitrile containing 20% NH4OH,and cleaned up by using C18 column solid-phase extraction(SPE). A perfect separation for cyromazine and melamine was achieved with their respective retention time 8 and 12 min. The calibration curves for cyromazine and melamine are linear in the concentration range of 0.01 to 1.0 μg/ml,with the correlation coefficients of 0.9999 and 0.9994,respectively. The detection limits of both the compounds is 0.02 mg/kg and the quantification limit is less than 0.05 mg/kg.

Key words: cyromazine, melamine, residues, high-performance liquid chromatography