食品科学 ›› 2009, Vol. 30 ›› Issue (14): 210-212.doi: 10.7506/spkx1002-6630-200914043

• 分析检测 • 上一篇    下一篇

奶及乳制品中三聚氰胺的检测研究

侯冬岩,刘晓媛,刁全平,李铁纯,回瑞华   

  1. 鞍山师范学院化学系
  • 收稿日期:2008-11-07 修回日期:2009-01-15 出版日期:2009-07-15 发布日期:2010-12-29
  • 通讯作者: 回瑞华 E-mail:ruihuahui@163.com
  • 基金资助:

    辽宁省教育厅科学技术基金资助课题(20331079)

HPLC Determination of Melamine in Milk and Dairy Products

HOU Dong-yan,LIU Xiao-yuan,DIAO Quan-ping,LI Tie-chun,HUI Rui-hua   

  1. Department of Chemistry, Anshan Normal University, Anshan 114007, China
  • Received:2008-11-07 Revised:2009-01-15 Online:2009-07-15 Published:2010-12-29
  • Contact: HUI Rui-hua E-mail:ruihuahui@163.com

摘要:

用高效液相色谱法测定奶及乳制品中三聚氰胺的含量。色谱条件为:色谱柱:C18 柱(150mm × 4.6mm,5μm);流动相:乙腈:0.202% 庚烷磺酸钠-0.210% 柠檬酸水溶液(10:90,V/V);检测波长:235.8nm;柱温:30℃。结果表明:在0.1~1.6μg/ml 范围内三聚氰胺与峰面积呈良好线性关系,相关系数为0.9973,回归方程为A = 59746C+ 183.48,回收率为98.3%~99.2%,相对标准偏差小于1.52%。

关键词: 奶, 乳制品, 三聚氰胺, 高效液相色谱法

Abstract:

A HPLC method was developed for determining melamine in milk and dairy products. The analysis was carried out using the Waters HPLC system equipped with a C18 column (150 mm × 4. 6 mm, 5 μm) and a diode array detector set at 235.8 nm. The mobile phase consisted of 0.202% haptane sodium sulphate acetonitrile solution and 0.210% citric acid aqueous solution (10:90, V/V) with a flow rate of 1.0 ml/min, and the column temperature was set at 30 ℃. A good linear correlation (the regression equation: A = 59746C + 183.48) between the peak area and the melamine determination was found in the range between 0.1 and 1.6 μg/ml with a correlation coefficient of 0.9973. The recoveries for melamine in three spiked dairy products ranged 98.3%- 99.2% with a RSD of less than 1.52 %.

Key words: milk, dairy products, melamine, HPLC

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