Lead-Selective Membrane Electrode Based on Dibenzopyrydino-18-Crown-6

Abstract

Abstract A lead ion-selective electrode based on dibenzopyridino-18-crown-6 as membrane carrier was successfully prepared. The electrode exhibits a Nernstian response for Pb2+ ions over a wide concentration range. Influences of the nature of plasticizer, the concentrations of internal solutions in the electrodes and the composition of the membrane were investigated. The lead ion-selective electrode exhibited comparatively good selectivities with respect to alkali, alkaline earth and some transition and heavy metal ions.