title: Study of the potential response of solid-state chloride electrodes at low concentration ranges.
abstract: Ion-selective electrodes based on silver chloride precipitates have been investigated in the low concentration range, by use of a specially designed cell of small volume. Electrode potential measurements and silver determinations in the corresponding solutions by atomic-absorption spectrometry were made. The results prove that the potential response of these ion-selective electrodes in the low concentration ranges is governed by inequality of the ion concentrations in the boundary zone of the test solution contacting the electrode membrane. This is a result of adsorption-desorption processes, a dissolution process followed by recrystallization of the silver chloride at the electrode membrane surface, and photoreduction of silver ions at the electrode surface.
authors.affiliation: Institute for General and Analytical Chemistry, Technical University, Budapest, Hungary.
authors.forename: E G
authors.initials: EG
authors.lastname: Harsányi
authors.forename: K
authors.initials: K
authors.lastname: Tóth
authors.forename: E
authors.initials: E
authors.lastname: Pungor
authors.forename: Y
authors.initials: Y
authors.lastname: Umezawa
authors.forename: S
authors.initials: S
authors.lastname: Fujiwara