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

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Malinowska, Elz˙bieta and Brzozka, Zbigniew and Kasiura, Krzysztof and Egberink, Richard J.M. and Reinhoudt, David N. (1994) Lead selective electrodes based on thioamide functionalized calix[4]arenes as ionophores. Analytica Chimica Acta, 298 (2). pp. 253-258. ISSN 0003-2670

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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.
Item Type:Article
Copyright:© 1994 Elsevier Science
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Link to this item:http://purl.utwente.nl/publications/57358
Official URL:http://dx.doi.org/10.1016/0003-2670(94)00266-5
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