多巴胺在聚邻氨基酚/Ni^(2+)修饰碳糊电极的伏安行为  

Voltammetric behavior of dopamine at poly(o-aminophenol) /nickel modified carbon paste electrode

作　　者：迟玉霞[1] 王英龙[2] 朱兆友[2] 

机构地区：[1]山东大学药学院,山东济南250012 [2]青岛科技大学化工学院,山东青岛266042

出　　处：《计算机与应用化学》2009年第5期566-570,共5页Computers and Applied Chemistry

摘　　要：应用循环伏安法在碳糊电极上电聚合形成聚邻氨基酚膜(P-OAP),以浸泡吸附法使膜吸入金属离子Ni^(2+),制成Ni^(2+)/P-OAP/CPE电极。电极经NaOH活化后,对多巴胺的电氧化的催化特性良好。薄膜的厚度、薄膜中Ni^(2+)的浓度、电极的活化时间以及缓冲溶液pH值均影响电极催化活性。多巴胺和抗坏血酸在膜电极上的氧化峰电位相差188 mV,可用于在大量抗坏血酸存在下对多巴胺的灵敏检测。Poly （o-aminophenol） was formed on the carbon paste electrode by using cyclic vohampere method. Ni^2＋ ions were absorbed into the P-OAp film by the method of immersion and adsoption. The Ni/P-OAP/CPE electrod was thus made. The application of Ni/P-OAP/CPE electrode to the catalysis of dopamine （DA） shows good catalysis effect of electric oxidation on dopamine. The obtained modified electrode can not only improve the electrochemical behavior of DA, but also resolve the overlap of the vohammetric responses of DA and AA into two well-defined DPV peaks with 188 mV peak separation.

关 键 词：邻氨基酚 NI^2+ 多巴胺 抗坏血酸 

分 类 号：O657.1[理学—分析化学] TQ015.9[理学—化学]