聚吖啶红修饰电极的制备及其应用

Preparation of Poly(Acridine Red) Modified Electrode and Its Application

用循环伏安法在玻碳电极 (GCE)表面制备了聚吖啶红聚合物膜修饰电极 (PARME)。与裸GCE相比 ,PARME对扑热息痛 (PRCT)的电化学氧化具有明显的催化作用 ,出现 1对可逆的氧化还原峰 ,氧化峰电位负移了 2 0 0mV。在 0 2 0～ 9 0 0 μmol/L和 0 0 2～ 0 2 0mmol/L范围内浓度与其峰电流呈良好线性关系 ,检测下限可达 2 0 0× 10 -3 μmol/L。PARME室温下可连续使用至少 4

A poly(acridine red) modified electrode(PARME) was prepared on a glassy carbon electrode by cyclic voltammetry. The electrode has an excellent electrocatalytic activity for the oxidation of p-acetamido- phenol(PRCT). A couple of sensitive and reversible redox peaks were recorded in the cyclic voltammograms. The oxidation peak potential was reduced by 200 mV compared with that on the bare GCE. The oxidation peak current was linearly dependent on the concentration of PRCT in the range of 0.20～9.00 μmol/L and 0.02～0.20 mmol/L with detection limit of 2.00×10 -3 μmol/L. No change in electrochemical properties of PARME was observed after repeated use for 45 d at ambient temperature.