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将金纳米粒子电沉积在石墨烯修饰的玻碳电极表面,研究了维生素B6(VB6)在该修饰电极上的电化学行为。扫描电镜用于该修饰电极组装过程的形貌表征。实验结果表明:VB6在此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VB6浓度在5.0×10-8～2.0×10-5 mol/L范围内呈线性关系,其线性回归方程为I(μA)=0.5697c(μmol/L)+0.06275,R=0.9992,检出限为2.0×10-8 mol/L(S/N=3)。一些常见的干扰物质如抗坏血酸不干扰VB6的检测。方法已用于片剂中VB6的含量的检测。
Gold nanoparticles were electrodeposited on the surface of graphene modified glassy carbon electrode to study the electrochemical behavior of vitamin B6 (VB6) on the modified electrode. Scanning electron microscopy was used to characterize the morphology of the modified electrode assembly process. The experimental results show that VB6 exhibits a good oxidation peak at the modified electrode. Under the optimum conditions, the oxidation peak current of VB6 is linear with the concentration of VB6 in the range of 5.0 × 10-8 ~ 2.0 × 10-5 mol / L The linear regression equation was I (μA) = 0.5697c (μmol / L) + 0.06275, R = 0.9992 with a detection limit of 2.0 × 10-8 mol / L (S / N = 3). Some common interfering substances such as ascorbic acid do not interfere with the detection of VB6. The method has been used for the detection of VB6 content in tablets.