| 维生素B6在维生素B12修饰电极上的电化学行为及其分析应用 |
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| 引用本文： | 王燕,毕春燕.维生素B6在维生素B12修饰电极上的电化学行为及其分析应用[J].化学分析计量,2012,21(5):43-45. |
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| 作者姓名： | 王燕 毕春燕 |
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| 作者单位： | 山东师范大学化学化工与材料科学学院,济南,250014 |
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| 摘 要： | 采用循环伏安法研究了维生素B6在维生素B12修饰玻碳电极上的电化学行为,建立了测定痕量维生素B6的新方法.在pH 8.6的NH3-NH4Cl缓冲溶液中,维生素B6在修饰电极上产生一个灵敏的氧化峰,采用差分脉冲伏安法测定,其氧化峰电流与维生素B6的浓度在8.0×10-7～2.0×10-4 mol/L范围内呈良好的线性关系,检出限为2.0×10-7 mol/L.该修饰电极具有良好的选择性、灵敏度及稳定性,用于片剂中维生素B6的定量分析,结果令人满意.
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| 关 键 词： | 化学修饰电极 维生素B12 维生素B6 差分脉冲伏安法 |
Electrochemical Behavior of Vitamin B6 at Vitamin B12 Modified Glassy Carbon Electrode and Its Application |
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| Wang Yan
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Bi Chunyan.Electrochemical Behavior of Vitamin B6 at Vitamin B12 Modified Glassy Carbon Electrode and Its Application[J].Chemical Analysis And Meterage,2012,21(5):43-45. |
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| Authors: | Wang Yan Bi Chunyan |
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| Institution: | (Department of Chemistry,Shandong Normal University,Jinan 250014,China) |
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| Abstract: | A Vitamin B12 modified glassy carbon electrode was prepared.The electrochemical behavior of Vitamin B6(VB6) was studied at the prepared electrode by cyclic voltammetry.The modified electrode showed an excellent electrocatalytical effect on oxidation of VB6.In NH3-NH4Cl buffer solution(pH 8.6),the anodic peak current had a linear relationship with VB6 concentration in the range of 8.0×10-7-2.0×10-4 mol/L by differential pulse voltammetry.The detection limit was 2.0×10-7 mol/L.The modified electrode had good selectivity and sensitivity.The proposed method had been applied to the determination of VB6 in tablets with satisfactory results. |
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| Keywords: | chemically modified electrode Vitamin B12 Vitamin B6 differential pulse voltammetry |
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