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    Paper-Based System for Ion Transfer Across the Liquid-Liquid Interface

    Access Status
    Fulltext not available
    Authors
    Podrazka, M.
    Nery, E.
    Pacowska, A.
    Arrigan, Damien
    Jönsson-Niedziólka, M.
    Date
    2018
    Type
    Journal Article
    
    Metadata
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    Citation
    Podrazka, M. and Nery, E. and Pacowska, A. and Arrigan, D. and Jönsson-Niedziólka, M. 2018. Paper-Based System for Ion Transfer Across the Liquid-Liquid Interface. Analytical Chemistry. 90 (15): pp. 8727-8731.
    Source Title
    Analytical Chemistry
    DOI
    10.1021/acs.analchem.8b02695
    ISSN
    0003-2700
    School
    Nanochemistry Research Institute
    URI
    http://hdl.handle.net/20.500.11937/73052
    Collection
    • Curtin Research Publications
    Abstract

    While ion transfer studies were shown to be a promising method for fundamental electrochemistry, pharmacokinetic studies, and sensing, they suffer from inherent instability of the interface formed between the organic and aqueous phases. This limits to some extent the range of solvents which can be used and confines these studies to the laboratory. We propose here the use of paper, which has revolutionized the way we think of miniaturized analytical devices during the past decade, as a perfect substrate for ion transfer studies across the liquid-liquid interface. We describe the design of a simple three-phase electrode paper-based setup for redox-driven transfer of anions from an aqueous to an organic phase. Electrochemical measurements of seven different anions and concentration dependence studies are in good agreement with the results obtained with traditional setups. Additionally, we show the applicability and limitations of such setups to the analysis of anion mixtures.

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