Electrocatalytic Oxidation and Determination of Dopamine in the Presence of Ascorbic Acid and Uric Acid at a Poly (4‐(2‐Pyridylazo)‐Resorcinol) Modified Glassy Carbon Electrode |
| |
| Authors: | Jinghua Chen Jing Zhang Xinhua Lin Hongyan Wan Shaobo Zhang |
| |
| Affiliation: | 1. Department of Analytical Chemistry and Pharmaceutical Analysis, Fujian Medical University, Fuzhou 350004, P.?R. China;2. Pharmaceutical Department of Fujian College of Medical Occupation and Technology, Fuzhou 350101, P.?R. China |
| |
| Abstract: | A sensitive and selective electrochemical method for the determination of dopamine (DA) was developed using a 4‐(2‐Pyridylazo)‐Resorcinol (PAR) polymer film modified glassy carbon electrode (GCE). The PAR polymer film modified electrode shows excellent electrocatalytic activity toward the oxidation of DA in a phosphate buffer solution (PBS) (pH 4.0). The linear range of 5.0×10?6–3.0×10?5 M and detection limit of 2.0×10?7 M were observed. Simultaneous detection of AA, DA and UA has also been demonstrated on the modified electrode. This work provides a simple and easy approach to selective detection of DA in the presence of AA and UA. |
| |
| Keywords: | Poly‐PAR modified GCE Electrocatalysis DA UA AA |
|
