三聚氰胺在碳糊电极上的电化学行为

Electrochemical Performance of Melamine on Carbon Paste Electrode

采用组合法制备了离子液体(1-丁基-3-甲基咪唑六氟磷酸盐)修饰碳糊电极(IL-CPE),运用差分脉冲伏安法研究了三聚氰胺在该电极上的电化学行为;对实验参数如缓冲溶液pH、浓度等含量进行了优化,建立了一种三聚氰胺检测的新方法。结果表明:以K 3Fe(CN)6为探针,在pH7.04的0.1mol/lPBS缓冲溶液中,该电极对三聚氰胺的氧化还原反应具有良好的电催化作用,三聚氰胺的浓度在1.0×10^-9~1.0×10^-4 mol/L之间与其相对应的氧化峰电流呈线性关系,检出限为4.2×10^-10 mol/L并对三聚氰胺废水进行了检测。

DPV(differential pulse voltammetry)was employed to study the electrochemical performance of melamine on a carbon past electrode(IL-CPE)decorated with an ionic liquid(1-butyl-3-methylimidazolium hexafluorophosphate)made with a combination method.By means of optimizing some parameters like pH and concentration of the buffer solution,a new method was generalized for the detection of melamine.The result shows that the electrode is a good electro catalyst for melamine redox in the 0.1mol/IPBS buffer solution(pH7.04)with K 3Fe(CN)6 as the probe,and the concentration of melamine between 1.0×10^-9 and 1.0×10^-4 mol/L is linearly related to corresponding oxidation peak current with the detection limit at 4.2×10^-10 mol/L.Then the melamine wastewater is detected with the method.