【摘要】 制备了酞菁铁 - Nafion双层膜修饰玻碳电极并研究了该电极的电化学特性 ;该双层膜电极对肾上腺素(EP)的电化学氧化具有催化氧化作用 ,催化电流与 EP的浓度在 5× 10 - 7～ 1× 10 - 4m ol/ L范围内呈良好的线性关系 ,相关系数为 0 .9934,检出限为 1× 10 - 7mol/ L .实验表明 ,肾上腺素在电极上的氧化作用为经历一个电子的自由基过程 ,表面电极反应常数为 Ks=13.2 7s- 1更多还原

【Abstract】 The glassy carbon electrode （GCE） modified the iron（Ⅱ） phthalocyanine-Nafion double layers was prepared and its electrochemical properties were studied. The results indicated that L-epinephrine can be electrocatalytical oxidized at the modified GCE.There is a good linear relation between the catalytic current of EP and its concentration in the range of 5×10^-7 to 1×10^-4 mol/L with the coefficient of 0.993 4. The detection limit is 1×10^-7 mol/L. There is a free radical in the course of the electrochemical oxidation of EP, and the constant of the exterior electrode reaction of EP is 13.27 s^-1.更多还原