食品科学 ›› 2008, Vol. 29 ›› Issue (10): 531-535.

• 分析检测 • 上一篇    下一篇

高效液相色谱测定生鲜乳及乳制品中三聚氰胺的方法研究

 汪辉, 彭新凯, 李文丽, 曹小彦, 黄辉, 胡朝晖   

  1. 长沙市食品质量安全监督检测中心;
  • 出版日期:2008-10-15 发布日期:2011-12-08

Study on Determination of Melamine in Fresh Milk and Dairy Product by High Performance Liquid Chromatography

WANG  Hui, PENG  Xin-Kai, LI  Wen-Li, CAO  Xiao-Yan, HUANG  Hui, HU  Chao-Hui   

  1. Changsha Center of Supervision and Inspection on Food Quality Safety,Changsha 410013,China
  • Online:2008-10-15 Published:2011-12-08

摘要: 建立用高效液相色谱-二极管阵列法测定生鲜乳及乳制品中的三聚氰胺的检测方法。本实验参照FDA三聚氰胺检测方法、NY/T1372—2007,探讨检测三聚氰胺的色谱条件和优化生鲜乳及乳制品中的三聚氰胺前处理方法。最后确立了有效的检测方法,采用硫酸铵(0.02mol/L):甲醇=94:6(V/V)作为流动相,203nm为检测波长。样品溶液在0.1~150μg/ml之间均具有良好的线性关系,最低检测限为0.5mg/kg,回收率均在91%以上,回归方程式为y=2.37×105x+1.21×104及相关系数r=0.9998。此法操作简便、快速、灵敏、准确,样品处理简便易行,适于测定生鲜乳及乳制品中的三聚氰胺。

关键词: 高效液相色谱, 二极管阵列检测器, 生鲜乳, 乳制品, 三聚氰胺

Abstract: A high performance liquid chromatography-photodiode array detector for determining the content of melamine in fresh milk and dairy produce was studied. Referring to FDA method and NY/T 1372—2007 of determination melamine,the chromatogram conditions for determining the content of melamine were discussed and the predisposal method of melamine in fresh milk and dairy product was optimized. The optimal detection conditions are determined as follows: 0. 02mol/L ammonium sulfate-methanol (94: 6,V/V) as mobile phase,and detection wavelength 203 nm. The good linearity is in the range of from 0.1 to 150 μg/ml,the detection limit is 0.5 mg/kg,the average recoveries of melamine are above 91%,and the regression equation is y=2.37×105x+1.21×104 with the coefficient 0.9998. The method is simple,rapid,sensitive and exact with convenient sample treatment method feasible. It is suitable for the determination of melamine in fresh milk and dairy product.

Key words: high performance liquid chromatography, photodiode array detector, fresh milk, dairy product, melamine