Electrocatalytic Oxidation of Dopamine on Acrylamide Modified Carbon Paste Electrode: A Voltammetric Study

被引：0
|
作者：
Shankar, S. Sharath [1 ]
Swamy, B. E. Kumara [1 ]
Pandurangachar, M.
Chandra, Umesh [1 ]
Chandrashekar, B. N. [1 ]
Manjunatha, J. G. [1 ]
Sherigara, B. S. [1 ]
机构：
[1] Kuvempu Univ, Dept PG Studies & Res Ind Chem, Shankaraghatta 577451, Karnataka, India
来源：
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2010年 / 5卷 / 07期
关键词：
Chemically modified electrode; Dopamine; Carbon paste electrode; Electrocatalytic oxidation; Cyclic voltammetry; ASCORBIC-ACID; URIC-ACID; FILM; SEPARATION;
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：
The preparation of acrylamide modified carbon paste electrode and its electrocatalytic oxidation to dopamine (DA) in 0.2 M phosphate buffer (PBS) at 7.4 pH were presented. Several parameters such as DA concentration, scan rate variation and pH were investigated by the cyclic voltammetric technique (CV). The peak currents were proportional to the concentration of DA with a detection limit of 3.5x10(-7) M. The concentration effect of modifier in the carbon paste electrode also reveals that the change in the electrode interface which would lead to the formation of anionic charge on the surface of the electrode could enhance the cationic charged dopamine. The stability and repeatability of the electrode for the determination of DA were also investigated.
引用
收藏
页码：944 / 954
页数：11
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