✦ LIBER ✦

All-Solid-State Potentiometric Sensors for Potassium and Sodium Based on Poly(pyrrole) Solid Contact

✍ Scribed by A. Michalska; A. Hulanicki; A. Lewenstam

Publisher: Elsevier Science
Year: 1997
Tongue: English
Weight: 55 KB
Volume: 57
Category: Article
ISSN: 0026-265X
DOI: 10.1006/mchj.1997.1489

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✦ Synopsis

Potentiometric sensors for potassium or sodium with internal poly(pyrrole) contact and plastic PVC membrane comprising commercially used ionophores were developed and investigated. The all-solid-state electrodes obtained exhibit Nernstian responses and stability superior over the coated wire electrodes. In the case of both electrodes, selectivity coefficients are slightly better compared to those of internal solution electrodes. The dependence of selectivity on the contacting layer ion-exchange properties was observed. The all-solid-state electrodes obtained were successfully applied in standard serum analysis.

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