芦丁在玻碳电极上的电化学行为研究

Electrochemical Behavior of Rutin on Glasscarbon Electrode

在 0 .1mol/LB -R缓冲溶液 (pH =3 .10 )中 ,用循环伏安法可得到芦丁的一对氧化还原峰。峰电位Epc=0 .40 5V ,Epa=0 .467V(vs.SCE)。实验表明 ,Rt在玻碳电极上的电极过程为一受吸附和扩散同时控制的准可逆过程。测得还原峰的电子转移系数为 0 .3 9,标准速率常数为ks=0 .48s-1。

In 0.1 mol/L B-R buffer solution at pH 3.10,both of reduction and oxidation peak of rutin(Rt) was obtained by cyclic voltammetry.The reduction and oxidation peak potentials were at 0.405V and 0.467V(vs.SCE).The experimental results indicate that the electrode process of Rt on the glass carbon electrode is a quasi-reversible process with absorption and diffusion.The number of electrode transfer coefficient of reduction peak was 0.39.The rate constant of the surface electrochemical reaction was determined as k s=0.48s -1.This method has used successfully to determine rutin in tablet.