Design of a Fluoride-Selective Electrode with Internal Contact Based on a Cu(II) Ion-Selective Electrode

The design of an electrode body that provides internal contact with a LaF₃ membrane based on a Cu(II) ion-selective electrode is described. The assembled fluoride electrode was examined in terms of potential-concentration curves and potential-time response. The behavior of the fluoride ion-selective electrode with the investigated internal contact was in good agreement with the commercial fluoride electrode.