Nanostructure-based electrochemical sensor for the voltammetric determination of benserazide, uric acid, and folic acid

doi:10.1016/S1872-2067(12)60655-X

Abstract

Abstract:

A carbon paste electrode modified with carbon nanotubes and ferrocene was fabricated. An electrochemical study of the modified electrode and an investigation into its efficiency for the electrocatalytic oxidation of benserazide, uric acid and folic acid were undertaken. The electrode was also used to study the electrocatalytic oxidation of benserazide using cyclic voltammetry, chronoamperometry, and square wave voltammetry (SWV). We found that the oxidation of benserazide at the surface of the modified electrode occurs at a potential about 285 mV lower than that of unmodified carbon paste electrode. SWV gave a linear dynamic range from 8.0×10^-7 to 7.0×10^-4 mol/L. The detection limit was 1.0×10^-7 mol/L for benserazide. This modified electrode was used for the determination of benserazide, uric acid, and folic acid in an urine sample.

Key words: Benserazide, Uric acid, Folic acid, Carbon nanotube, Carbon paste electrode

Sakineh Esfandiari Baghbamidi, Hadi Beitollahi, Seyed Zia Mohammadi, Somayeh Tajik, Somayeh Soltani-Nejad, Vahhab Soltani-Nejad. Nanostructure-based electrochemical sensor for the voltammetric determination of benserazide, uric acid, and folic acid[J]. Chinese Journal of Catalysis, 2013, 34(10): 1869-1875.

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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(12)60655-X

https://www.cjcatal.com/EN/Y2013/V34/I10/1869

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