Ion-selective electrodes with liquid membranes based on solvates of alkali metal salts of metal halide anions in voltammetry in solvating solvents

Alkali metal salts of metal halide anions, dissolved in oxygen-bearing solvents and solvated by them via the hydrate-solvate mechanism, may be considered as a new class of electrode-active substances and used as ion exchangers of liquid membranes for ion-selective electrodes. The membranes exhibit both the anionic and cathionic functions, the first being stronger. Such membranes are more selective in some cases towards certain complex anions and tend to carry higher charged anions compared with a membrane based on tetradecyl ammonium bromide. Some solvate liquid membranes are characterized by satisfactory analytical functions. 16 refs., 4 figs., 3 tabs