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    Characterization of the Electrochemical Behavior of Gastrointestinal Fluids Using a Multielectrode Sensor Probe

    168824_168824.pdf (407.2Kb)
    Access Status
    Open access
    Authors
    Twomey, K.
    Alvarez de Eulate, E.
    Marchesi, J.
    Kolida, S.
    Gibson, G.
    Arrigan, Damien
    Ogurtsov, V.
    Date
    2011
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Twomey, Karen and Alvarez de Eulate, Eva and Marchesi, Julian and Kolida, Sofia and Gibson, Glenn and Arrigan, Damien and Ogurtsov, Vladimir. 2011. Characterization of the Electrochemical Behavior of Gastrointestinal Fluids Using a Multielectrode Sensor Probe. IEEE Transactions on Biomedical Engineering. 58 (9): pp. 2521-2527.
    Source Title
    IEEE Transactions on Biomedical Engineering
    DOI
    10.1109/TBME.2011.2158543
    ISSN
    0018-9294
    School
    Department of Applied Chemistry
    Remarks

    © 2011 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

    URI
    http://hdl.handle.net/20.500.11937/26790
    Collection
    • Curtin Research Publications
    Abstract

    A characterization of gastrointestinal fluids has been performed by means of an electrochemical sensor that has potential for clinical in vivo and in vitro monitoring applications. The sensor comprised a three-electrode cell with a counter, reference, and four working electrodes, Au, Pt, Ir, and Rh. Cyclic voltammetry was used to obtain chemical information from faecal water (in vitro) and gut model (in vivo) fluids. Stable voltammetric responses were obtained for both fluids at these noble metal workingelectrodes. The responses differed in shape that demonstrated the discrimination capability and the potential for practical use as a tool for gastrointestinal fluid investigation. The analysis of the stabilityprofiles in faecal water over a 14-h duration has indicated a possible adsorptionmechanism with the formation of a biolayer on the sensor surface. The stability in gut model fluids over a 42-h durationhas demonstrated a more stable profile, but themechanisms involved are more complicated to determine.

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