Electrochemical Studies of Dopamine, Ascorbic Acid and Their Simultaneous Determination at a Poly (Rosaniline) Modified Carbon Paste Electrode: A Cyclic Voltammetric Study

被引：0
|
作者：
Manjunatha, Jamballi G. [1 ,2 ]
Swamy, Bahaddurghatta E. Kumara [1 ]
Deraman, Mohamad [2 ]
机构：
[1] Kuvempu Univ, Dept PG Studies & Res Ind Chem, Shankaraghatta, Karnataka, India
[2] Univ Kebangsaan Malaysia, Sch Appl Phys, Fac Sci & Technol, Bangi 43600, Selangor, Malaysia
来源：
ANALYTICAL & BIOANALYTICAL ELECTROCHEMISTRY | 2013年 / 5卷 / 04期
关键词：
Electrochemistry; Rosaniline; Electropolymerisation; Dopamine; Ascorbic Acid;
D O I：
暂无
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
A sensitive and selective electrochemical method for the determination of dopamine was developed using a rosaniline polymer film modified carbon paste electrode. The rosaniline polymer film modified electrode showed excellent electrocatalytic activity towards the oxidation of dopamine (DA) in phosphate buffer solution (pH 7.0). The interference studies show that the modified electrode exhibits excellent selectivity in the presence of ascorbic acid (AA). A significant improvement in cyclic voltammetric responses to DA and AA (well-defined voltammetric peaks at potentials around 205, -43 mV for DA and AA respectively) and a prominent enhancement of voltammetric sensitivity was observed at the rosaniline polymer film modified CPE. Hence, this work provides a simple and easy approach to selective detection of dopamine in the presence of ascorbic acid.
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页码：426 / 438
页数：13
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