Radhajeyalakshmi, S. and Senthilkumar, S. and Mathiyarasu, J. and Phani, K.L.N. and Yegnaraman, V. (2007) Simultaneous determination of ascorbic acid, dopamine and uric acid using PEDOT polymer modified electrodes. Indian Journal of Chemistry, 46. pp. 957-961.

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Abstract

Dopamine, uric acid and ascorbic acid have been determined simultaneously on a poly(3,4-ethylenedioxythiophene) modified electrode using electrochemical techniques. On a bare glassy car-bon electrode, all three undergo oxidation and appear as a single peak at around 200 mV, whereas on the modified electrode, dis-tinct peaks with clear potential separation are observed, paving way for their simultaneous determination. Detection limits of 7.4 µ M , 1.2 µ M and 1.4 µ M for ascorbic acid, dopamine and uric acid, respectively are observed by pulse voltammetry. The possible interference from creatinine, norepinephrine, epinephrine, glucose, ascorbic acid, urea, oxalate and acetylsalicylic acid (aspirin) has been tested. The protocol developed using this modified glassy carbon electrode has been evaluated using the human blood serum samples for the simultaneous determination of dopamine and uric acid.

Item Type:	Article
Subjects:	Electrodics and Electrocatalysis
Divisions:	UNSPECIFIED
Depositing User:	ttbdar CECRI
Date Deposited:	08 May 2012 09:00
Last Modified:	29 Dec 2014 07:08
URI:	http://cecri.csircentral.net/id/eprint/670

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