维生素B_6在纳米Au-N,P/石墨烯修饰电极上的电化学行为

将金纳米粒子(AuNPs)电沉积在N,P/石墨烯(N,P/Graphene)修饰的玻碳电极表面,研究了维生素B_6(VB_6)在该修饰电极上的电化学行为。实验结果表明:VB_6在该修饰电极上出现一个良好的氧化峰,在最佳实验条件下,其氧化峰电流与VB_6的浓度在2.0×10~(-5)~4.0×10~(-4) mol/L范围内呈线性关系,相关系数R=0.998,检出限为9.2×10~(-6) mol/L。一些常见的物质如K~+、Na~+、Zn~(2+)、葡萄糖(Glu)不干扰VB_6的检测。此方法已用于片剂中VB_6含量的检测,获得较好结果。

Electrochemical Behavior of Vitamin B6 at a N,P/Grapene Modified Electrode

Au nanoparticles were prepared on the N,P-codoped graphene modified glassy carbon electrode (GCE) by electrodeposition.The electrochemical behavior of Vitamin B6 (VB6) was investigated at the as-prepared modified electrode.The results indicate that the electrochemical redox reaction could occur more easily at the modified electrode than the bare and graphene modified GCE.Under the optimum condition,the amperometric currents are linear with the concentration of vB6 in the range of 2.0 × 10 5-4.0 × 10-4 mol/L with a correlation coefficient(R) of 0.998.The detection limit is 9.2 × 10-6 mol/L at a signal-to-noise ratio of 3.The sensor shows good anti-interference performance for the coexistence such as K+,Na+,Zn2+ and glucose.The proposed method was used for determination of VB6 in the tablet with satisfactory results.