Abstract
This paper describes analytical applications of K + -selective liquid membrane electrode. The membrane 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. KEY WORDS : K+-selective electrode, Macrocyclic ligand, Potentiometry Bull. Chem. Soc. Ethiop. 2008 , 22(2), 295-299.
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