Solid-Contact Ion-Selective Electrodes with Copper Hexacyanoferrate in the Transducer Layer

Autor(en): Timofeev, V. V.
Levin, M. B.
Starikova, A. A.
Trofimov, M. A.
Korneev, S. M.
Mikhelson, K. N.
Stichwörter: CARBON; copper hexacyanoferrate; Electrochemistry; EXCHANGING RESIN; GLASS ELECTRODES; MEMBRANE; POLY(3-OCTYLTHIOPHENE); POLYMER; potassium ions; POTENTIAL STABILITY; SENSORS; solid-contact ion-selective electrodes; water hardness
Erscheinungsdatum: 2018
Herausgeber: PLEIADES PUBLISHING INC
Journal: RUSSIAN JOURNAL OF ELECTROCHEMISTRY
Volumen: 54
Ausgabe: 4
Startseite: 400
Seitenende: 408
Zusammenfassung: 
The possibility of using mixed Fe2+/Fe3+ copper hexacyanoferrate (CuHCF) as the material for the transducer layer of solid-contact ion-selective electrodes (SC-ISEs) with plasticized polyvinylchloride membranes is studied. The study is performed for K+-SC-ISEs and water-hardness SC-ISEs. It is shown that CuHCF combines the ion-exchange and redox properties and, hence, in principle, should be suitable for SC-ISEs. However, the reproducibility of SC-ISE potentials from one electrode to another and their stability in time are far below those of conventional ISEs with internal aqueous solution. The potentials of individual SC-ISEs can be brought closer to one another by their polarization using a potentiostat or by their short-circuiting to a saturated silver-chloride reference electrode.
ISSN: 10231935
DOI: 10.1134/S1023193518040080

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