- Turkish Journal of Chemistry
- Vol: 32 Issue: 5
- Potentiometric Utility of the New Solid-State Sensor Based on Crowned Ionophore for the Determinatio...
Potentiometric Utility of the New Solid-State Sensor Based on Crowned Ionophore for the Determination of K+
Authors : Barış Kemer, Mustafa Özdemir
Pages : 521-528
View : 10 | Download : 4
Publication Date : 9999-12-31
Article Type : Makaleler
Abstract :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 (\ge 55 (\pm15) mV/decade of K activity) to K+ within the concentration range 1.5 x 10-1 - 1.0 \times 10-5 M. The operational pH range of the electrode was 5--7. The response time of the electrode was fast (Keywords : Ion-selective electrodes, Solid-state contact PVC-membrane, K+ determination.