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    Voltammetry of chromium(VI) at the liquid|liquid interface

    Access Status
    Fulltext not available
    Authors
    O'Mahony, A.
    Scanlon, M.
    Berduque, A.
    Beni, V.
    Arrigan, Damien
    Faggi, E.
    Bencini, A.
    Date
    2005
    Type
    Journal Article
    
    Metadata
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    Citation
    O'Mahony, A. and Scanlon, M. and Berduque, A. and Beni, V. and Arrigan, D. and Faggi, E. and Bencini, A. 2005. Voltammetry of chromium(VI) at the liquid|liquid interface. Electrochemistry Communications. 7 (10): pp. 976-982.
    Source Title
    Electrochemistry Communications
    DOI
    10.1016/j.elecom.2005.06.011
    Additional URLs
    http://www.sciencedirect.com/science/article/pii/S1388248105001839
    ISSN
    1388-2481
    URI
    http://hdl.handle.net/20.500.11937/12491
    Collection
    • Curtin Research Publications
    Abstract

    The voltammetry of hexavalent chromium (ammonium dichromate) at the interface between two immiscible electrolyte solutions is reported. Detection of Cr(VI) by ion transfer voltammetry is possible by use of an organic phase ionophore, which facilitates the transfer of Cr(VI) from the aqueous into the organic phase. The ionophore was the penta protonated form of polyamine macrocycle 2,5,8,11,14-pentaaza[15]-16,29-phenanthrolinophane (NeoTT). Cyclic voltammetry showed an increase of the peak current on increasing the concentration of Cr(VI). Square wave voltammetry with background subtraction was employed for low level concentration detection. The lowest concentration detected was 0.25 parts per million of Cr(VI).

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