期刊
FOOD CHEMISTRY
卷 129, 期 1, 页码 206-212出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2011.04.025
关键词
Miniaturised capillary electrophoresis; Electrochemical detection; 2-Thiobarbituric acid; Derivatisation; Formaldehyde; Food
资金
- Research Foundation of the Science and Technology Commission of Shanghai Municipality [09ZR1409700]
- National Science Foundation of China [20875032]
- Daxia Foundation of ECNU [KY2010-003D]
A novel miniaturised capillary electrophoresis with electrochemical detection (mini-CE-ED) method has been developed for fast determination of formaldehyde (FA) and acetaldehyde (AA) in several food products without preconcentration. Because FA and AA usually exist as uncharged molecules with zero electrophoretic mobility, plus the fact that these two compounds lack of chromophore for sensitive ultraviolet (UV) detection, effective and sensitive determination of FA and AA in real samples is often a challenging task. In this work, an electroactive compound 2-thiobarbituric acid (TBA) was selected as the ideal derivatisation reagent to facilitate the electrochemical determination of FA and AA. Under the optimum conditions. FA-TBA and AA-TBA adducts can be well separated by mini-CE-ED with low detection limit of 9.10 x 10(-9) g/mL (13.2 fg) for FA (S/N = 3). The proposed method should find a wide range of analytical applications in food products as an alternative to conventional and microchip CE approaches. (C) 2011 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据