Calixarene derivatives as the sensory molecules for silver ion-selective electrode

Abstract

Silver ion-selective electrodes were prepared with polymeric membranes based on nitrogen containing calixarene derivatives. The electrodes gave a good Nernstian response of 49–53 mV decade −1 for silver in the activity range 5×10 −6–5×10 −2 M, the limit of detection reached 10 −5.6 M and exhibited high selectivity towards alkali, alkaline earth and transition metal ions. The electrode was used as indicator electrode in titrations of Ag + with Cl − ions.