Bulletin of the Chemical Society of Ethiopia (Aug 2008)
<b>Potentiometric determination of K<sup>+</sup> ions using a K<sup>+</sup>-selective electrode with macrocyclic liquid membrane</b>
Abstract
This paper describes analytical applications of K+-selective liquid membrane electrode. Themembrane is the solution of the active complex formed by the K+ ions with dibenzo-18-crown-6 ionophore (DB-[18]-C-6) extracted in propylenecarbonate (PC). Successful application of the developed electrode for K+ ions determination in aqueous solution and samples of commercial mineral water by direct potentiometry is presented.