Lead selective electrodes based on thioamide functionalized calix[4]arenes as ionophores

Elz˙bieta Malinowska, Zbigniew Brzozka, Krzysztof Kasiura, Richard J.M. Egberink, David Reinhoudt

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    Abstract

    Lead selective electrodes based on a di- and tetrathioamide functionalized calix [4] arene as ionophores were investigated. The Pb(II)-response functions exhibited almost theoretical Nernstian slopes in the activity range 10¿6¿10¿2M of lead ions. For both ionophores a preference for lead over other cations was observed. The best results were obtained for membranes containing the tetrathioamide derivative (ionophore 1), potassium tetrakis(4-chlorophenyl) borate and o-nitrophenyl octyl ether as a plasticizer. This electrode showed greatly improved selectivity over copper, zinc and cadmium ions as compared with commercial solid-state lead selective electrodes.
    Original languageUndefined
    Pages (from-to)253-258
    JournalAnalytica chimica acta
    Volume298
    Issue number2
    DOIs
    Publication statusPublished - 1994

    Keywords

    • IR-57358

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