钴、镍、铜修饰碳糊电极过氧化氢传感器的研究

The Study of the Hydrogen Peroxide Sensor Modified Carbon Paste Electrode by Co, Ni, Cu

摘要: 用电沉积法在碳糊电极表面修饰钴、镍、铜制得修饰碳糊电极，研究了H₂O₂在钴、镍、铜修饰碳糊电极上的电化学行为，用计时安培法对H₂O₂进行了的测定，在浓度为3.25 × 10−6 mol/L~3.25 × 10−4 mol/L范围内H₂O₂浓度与电流呈线性关系，检出限为3.0 × 10−7 mol/L。并且将该方法用于实际样品的检测，结果表明该方法选择性好，分析速度快，操作简单。

Abstract: A cobalt, nickel and copper modified carbon paste electrode was prepared by electrode position and the electrochemical behavior of hydrogen peroxide was investigated. The determination of hydrogen peroxide was achieved by chronoamperometry, revealing that the concentration of hy-drogen peroxide changed linearly with the current when the concentration ranged from 3.25 × 10−6 mol/L to 3.25 × 10−4 mol/L, and the detection limit is 3.0 × 10−7 mol/L. The methodology was applied in detection of actual samples, manifesting several features including high selectivity, quick analysis and easy operation.