<b>Potentiometric determination of K⁺ ions using a K⁺-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.

Keywords

• K⁺-selective electrode
• Macrocyclic ligand
• Potentiometry