食品科学 ›› 2010, Vol. 31 ›› Issue (12): 203-205.doi: 10.7506/spkx1002-6630-201012047

• 分析检测 • 上一篇    下一篇

分子印迹整体柱用于测定奶制品中的三聚氰胺

李志伟,刘 佳,霍云霞,崔 哲,刘方方   

  1. 河北科技大学化学与制药工程学院
  • 收稿日期:2009-10-14 修回日期:2010-01-28 出版日期:2010-06-15 发布日期:2010-12-29
  • 通讯作者: 李志伟 E-mail:Leezhw@tom.com;lizhiwei@hebust.edu.cn

Use of Molecular Imprinted Monolithic Column for the HPLC Determination of Melamine in Dairy Products

LI Zhi-wei,LIU Jia,HUO Yun-xia,CUI Zhe,LIU Fang-fang   

  1. College of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
  • Received:2009-10-14 Revised:2010-01-28 Online:2010-06-15 Published:2010-12-29
  • Contact: LI Zhi-wei E-mail:Leezhw@tom.com;lizhiwei@hebust.edu.cn

摘要:

目的:采用分子印迹整体柱技术,建立测定奶制品中三聚氰胺的一种新方法。方法:通过制备分子印迹整体柱,并将其作为固定相,采用高效液相色谱法进行测定。以体积分数10% 甲醇溶液- 体积分数0.1% 醋酸溶液(5:95,V/V)为流动相,紫外检测波长240nm,流速0.5mL/min。结果:三聚氰胺在1.0~100.0μg/mL 范围内线性关系良好,r = 0.9987。加样回收率为87.0%~100.5%,RSD 小于5.0%(n = 6)。结论:该方法操作简单,针对性强,不需复杂的样品前处理,可用于奶制品中三聚氰胺残留量的测定。

关键词: 分子印迹技术, 高效液相色谱, 三聚氰胺, 奶制品

Abstract:

A molecular imprinted monolithic column was prepared for providing stationary phase for the HPLC analysis of melamine in dairy products, in which the mobile phase was a mixture of 10% aqueous methanol solution and 0.1% aqueous acetic acid solution (5:95, V/V) at a flow rate of 0.5 mL/min and the detection wavelength was set at 240 nm. There was a good linear relationship between HPLC peak area and melamine concentration over the range from 1.0 to 100.0 μg/mL (r = 0.9987). Average recoveries for melamine in a blank sample spiked at 3 levels were between 87.0% and 100.5%, with a RSD of less than 5% (n = 6). In conclusion, this method is easily operated, highly selective and has no requirement of complicated sample pretreatment and is applicable for the determination of melamine residue in dairy products.

Key words: molecular imprinting technique (MIT), high performance liquid chromatography (HPLC), melamine, dairy products

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