Potentiometric utility of the new solid-state sensor based on crowned ionophore for the determination of $K^+$
Potentiometric utility of the new solid-state sensor based on crowned ionophore for the determination of $K^+$
All solid-state contact poly vinyl chloride (PVC) membrane potassium-selective electrode has been developed. The construction of the ion selective electrode membrane was organized using ionophore 4,4 -bis[4 -phenoxy(15-crown-5) methyl]benzyl in PVC cocktail. The potentiometric performance characteristics of the electrode were investigated by a computerized system. The electrode was found highly selective to $K^+$ ions over a wide variety of other cations. The electrode almost exhibited a Nernstian response (> 55 (±15) mV/decade of K activity) to $K^+$ within the concentration range $1.5 x 10^{-1} -1.O x 10^{-5}$ M. The operational pH range of the electrode was 5-7. The response time of the electrode was fast (
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