Effect of the concentrations of triphenyltin chloride and anion exchanger on the anion selectivity of a plasticized PVC membrane electrode

Sadayuki Koizumi, Toshihiko Imato, Nobuhiko Ishibashi

    Research output: Contribution to journalArticlepeer-review

    7 Citations (Scopus)

    Abstract

    Potentiometric selectivities of a plasticized poly(vinyl chloride) (PVC) membrane containing a hydrophobic quaternary ammonium salt and triphenyltin chloride (TPTCl) for several inorganic anions were evaluated by measurements of the membrane potential of a bi-ionic system (the so-called bi-ionic membrane potential). The addition of TPTCl to the plasticized PVC membrane containing a quaternary ammonium salt gave rise to selectivity patterns different from the Hofmeister anion series, which is observed for a membrane containing only the quaternary ammonium salt. The change in the selectivity pattern from the Hofmeister to the non-Hofmeister was observed under conditions where the TPTCl concentration was higher than the quaternary ammonium salt in the membrane. Response mechanisms and the selectivity of the TPTCl-based electrode are discussed with respect to the concentration dependence of TPTCl and quaternary ammonium salt in the membrane.

    Original languageEnglish
    Pages (from-to)37-43
    Number of pages7
    JournalFresenius' Journal of Analytical Chemistry
    Volume357
    Issue number1
    DOIs
    Publication statusPublished - Jan 1 1997

    All Science Journal Classification (ASJC) codes

    • Biochemistry

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