Determination of Dopamine on Poly(amino black 10B)/Nafion Modified Electrode
- VernacularTitle:聚氨基黑10B/Nafion修饰电极上多巴胺的检测
- Author:
Chunyan WANG
;
Xiaofeng TANG
;
Jian TIAN
;
Tianyan YOU
- Publication Type:Journal Article
- Keywords:
Modified electrode;
Amino black 10B;
Nafion;
dopamine;
electrocatalysis
- From:
Chinese Journal of Analytical Chemistry
2009;37(12):1800-1804
- CountryChina
- Language:Chinese
-
Abstract:
A poly(amino black 10B)/Nafion modified glassy carbon(GC) electrode for the detection of dopamine(DA) has been developed. The modified electrode showed an excellent electrocatalytic effect on the oxidation of DA. In cyclic votammetric measurements, the redox peak current increased linearly with the concentration of DA in the range of 2.0×10~(-7) 3.0×10~(-5) mol/L in PBS of pH 6.0, with a correlation coefficient of 0.9993 and 0.9991, respectively. The detection limit(S/N=3) was 1.0×10~(-7) mol/L. Moreover, the modified electrode exhibited good repeatability and long-time stability, and avoided the interference of ascorbic acid. The modified electrode has been used for the determination of DA in the injections and calf serum with good recovery and reproducibility.
