Amperometric Determination of Ascorbic Acid on an Au Electrode Modified by a Composite Film of Poly(3,4-ethylenedioxythiophene) and Superconductive Carbon Black

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Author(s)

    • ZHENG Haitao
    • School of Environmental and Chemical Engineering, Tianjin Polytechnic University
    • SUYE Shin-ichiro
    • Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, University of Fukui

Abstract

A new composite film-modified electrode was prepared by the electropolymerisation of poly(3,4-ethylenedioxythiophene) (PEDOT) and superconductive carbon black (SCB) on a gold electrode. The PEDOT-SCB/Au electrode exhibited excellent ability towards the electrocatalytic oxidation of ascorbic acid, in terms of a 480 mV shift of the oxidation potential in the negative direction, and a dramatically enhanced oxidation current. Under the optimum conditions, the amperometric detection of ascorbic acid provided a wide linear detection range from 1.0 × 10<sup>−7</sup> to 8.0 × 10<sup>−4</sup> M, and a detection limit of 5.0 × 10<sup>−8</sup> M (<i>S/N</i> = 2) as well as good reproducibility and stability.

Journal

  • Analytical Sciences

    Analytical Sciences 31(5), 429-436, 2015

    The Japan Society for Analytical Chemistry

Codes

  • NII Article ID (NAID)
    130005067335
  • NII NACSIS-CAT ID (NCID)
    AA10500785
  • Text Lang
    ENG
  • ISSN
    0910-6340
  • NDL Article ID
    026378906
  • NDL Call No.
    Z54-F482
  • Data Source
    NDL  J-STAGE 
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