Abstract
The distribution of ions at the liquid|liquid interface is the principle reaction of analytical methods for the determination and separation of ions such as ion-pair extraction and ion-selective electrodes. To elucidate the ion-distribution mechanism at the liquid|liquid interface, ion-transfer voltammetry with the liquid|liquid interface was employed, by which the transfer of a single ion at the liquid|liquid interface could be observed. This article reviews our studies on ion distribution at the liquid|liquid and liquid|membrane interfaces involved in analytical methods such as ion-pair extraction, ion-selective electrodes and electrolytic ion-extraction.
