乙二醇的电化学分析方法研究

Study on Electrochemical Behavior of Ethylene Glycol

本文制备了介孔碳/纳米铂复合材料修饰玻碳电极,并采用循环伏安法研究了乙二醇在该电极上的电化学行为,与乙二醇在裸玻碳电极上的电化学行为进行相应的对比,发现乙二醇在修饰电极上的氧化峰电流较大,且氧化峰电势电位较低,表明乙二醇在该修饰的电极上具有良好的电催化氧化效应。乙二醇在浓度范围为1.0×10^(-5)~1.0×10^(-3)mol/L之间与峰电流ip呈良好的线性关系,据此建立了乙二醇的电化学分析方法,可用于实际样品中乙二醇的测定。

In this paper, the conditions of preparation the mesoporous carbon/platinum nanoparticles modified glassy carbon electrode were investigated. It was found that the modified electrode had effective catalytic activity to the ethylene glycol. Compared to the mesoporous carbon modified glassy carbon electrode in electrochemical response, the oxidation peak current and reductive peak current of ethylene glycol were greatly increased on the chemically modified electrode. It is indicated that the modified electrode was provided with good catalytic effect to ethylene-glycol. On the optimum conditions, the electrochemical behavior of ethylene glycol on the modified electrode was studied. The concentration of ethylene glycol in a range of 1.0 × 10 -5 1.0 × 10 -3 mol/L was liner with oxidation peak. This method could be applied to determine the ethylene glycol sample with high accuracy and reproducibility.