极化玻碳电极和聚L-半胱氨酸玻碳修饰电极稳定性的研究  

Study on the Stabilities of the Activated Glassy Carbon Electrode and Poly(L-cysteine) Modified Electrode

作　　者：李小春[1,2] 马心英[2] 李霞[2] 李伟[1,2] 袁超[1] 郁章玉[1,2,3] 

机构地区：[1]曲阜师范大学化学与化工学院,山东曲阜273165 [2]菏泽学院,山东菏泽274015 [3]山东大学化学与化工学院,山东济南250100

出　　处：《菏泽学院学报》2009年第5期91-94,共4页Journal of Heze University

基　　金：中国博士后科学基金资助项目(20080430193);山东省博士后创新专项基金资助项目(200702020);菏泽学院博士基金资助项目(200701)

摘　　要：在含有5.0×10-3mol.L-1EP的浓度为0.5 mol.L-1H2SO4溶液中,采用循环伏安法研究并比较了极化玻碳电极与聚L-半胱氨酸修饰电极的稳定性.实验结果表明,两者都表现出较为可逆的伏安响应,并对肾上腺素的电化学氧化具有良好的电催化性能,但极化玻碳电极的稳定性差,而聚L-半胱氨酸修饰电极则表现出良好的稳定性.The stabilities were studied and compared between the activated glassy carbon electrode and the poly （L- cysteine） modified electrode in the solution of 0.5 mol · L^-1 H2SO4 with 5.0 × 10^-3 mol · L^-1 epinephrine by cyclic voltammetry method. The results were obtained from the experiment that both of the two electrods respectively presented a parr of quasi - reversible redox peaks, and strong catalytic effects on the electrooxidation of epinephrine. However, the poly （L- cysteine） modified electrode behaved a better stability compared with the activated glassy carbon electrode.

关 键 词：肾上腺素 循环伏安法 玻碳电极 L-半胱氨酸 

分 类 号：O646[理学—物理化学]