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    Voltammetric Selectivity in Detection of Ionized Perfluoroalkyl Substances at Micro-Interfaces between Immiscible Electrolyte Solutions

    89413.pdf (875.8Kb)
    Access Status
    Open access
    Authors
    Islam, Gazi Jahirul
    Arrigan, Damien
    Date
    2022
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Islam, G.J. and Arrigan, D.W.M. 2022. Voltammetric Selectivity in Detection of Ionized Perfluoroalkyl Substances at Micro-Interfaces between Immiscible Electrolyte Solutions. ACS Sensors. 7 (10): pp. 2960–2967.
    Source Title
    ACS Sensors
    DOI
    10.1021/acssensors.2c01100
    ISSN
    2379-3694
    Faculty
    Faculty of Science and Engineering
    School
    School of Molecular and Life Sciences (MLS)
    Remarks

    This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Sensors copyright © American Chemical Society, after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acssensors.2c01100.

    URI
    http://hdl.handle.net/20.500.11937/89589
    Collection
    • Curtin Research Publications
    Abstract

    Widespread contamination by per- and polyfluoroalkyl substances (PFAS) and concern about their health impacts require the availability of rapid sensing approaches. In this research, four PFAS, perfluorooctanoic acid (PFOA), perfluorobutanesulfonic acid (PFBS), perfluorohexanesulfonic acid (PFHxS), and perfluorooctanesulfonic acid (PFOS), were studied at micropipette-based interfaces between two immiscible electrolyte solutions (μITIES) to assess the potentiality for their detection by ion transfer voltammetry. All four PFAS substances were detected by ion transfer voltammetry at the μITIES, with half-wave transfer potentials (E1/2 vs Ag/AgCl) for PFOS, PFHxS, PFBS, and PFOA of 0.34, 0.32, 0.25, and 0.23 V, respectively. The selectivity of the μITIES for detection of PFAS mixtures was investigated. Among the six combinations of the four compounds, most combinations were detectable, except PFOA + PFBS and PFHxS + PFOS, because of unresolved ion transfer voltammograms. These findings provide a basis for the design of new PFAS sensing strategies based on ion transfer voltammetry.

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