铜-金属有机框架物修饰电极的制备及甲硝唑测定

在玻碳电极表面聚合一层对氨基苯甲酸导电膜,通过羧基配位作用将具有优良导电性及催化能力的铜金属有机框架化合物(Cu-MOFs)自组装在对氨基苯甲酸修饰电极表面,制备了铜-金属有机框架物修饰电极。对Cu-MOFs进行了表征,研究了修饰电极的伏安特征及对甲硝唑(MNZ)的电催化特性,建立了一种高灵敏度的测定甲硝唑的电化学分析方法。在1.0~100.0μmol/L浓度范围内,MNZ的还原电流与其浓度呈良好的线性关系,检出限达0.23μmol/L,方法已用于蜂蜜样品中MNZ的测定。

Preparation of Metal Organic Framework Modified Electrode and Its Application in Detection of Metronidazole

A poly amino acid film was modified on the surface of glassy carbon electrode by electro polymerization,then the copper metal organic frameworks(MOFs) with excellent electrical conductivity and catalytic ability were self-assembled on the surface of the modified electrode via carboxyl coordination.The voltammetric behaviors of metronidazole(MNZ) on the modified electrode and its electrocatalytic properties were studied.Thus,a MNZ electrochemical sensor with preeminent sensitivity was established.The method had a good linearity in the range of 1.0-100.0 μmol/L with a detection limit of 0.23 μmol/L,and was also successfully applied in the detecttion of MNZ in the honey sample.