Solid-Contact Ion-Selective Electrodes with Copper Hexacyanoferrate in the Transducer Layer
- Authors: Timofeev V.V.1, Levin M.B.1, Starikova A.A.1, Trofimov M.A.1, Korneev S.M.1, Mikhelson K.N.1
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Affiliations:
- Institute of Chemistry
- Issue: Vol 54, No 4 (2018)
- Pages: 400-408
- Section: Article
- URL: https://journals.rcsi.science/1023-1935/article/view/189330
- DOI: https://doi.org/10.1134/S1023193518040080
- ID: 189330
Cite item
Abstract
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.
About the authors
V. V. Timofeev
Institute of Chemistry
Email: konst@km3241.spb.edu
Russian Federation, 26 Universitetskij pr. Staryi Petergof, St. Petersburg, 198504
M. B. Levin
Institute of Chemistry
Email: konst@km3241.spb.edu
Russian Federation, 26 Universitetskij pr. Staryi Petergof, St. Petersburg, 198504
A. A. Starikova
Institute of Chemistry
Email: konst@km3241.spb.edu
Russian Federation, 26 Universitetskij pr. Staryi Petergof, St. Petersburg, 198504
M. A. Trofimov
Institute of Chemistry
Email: konst@km3241.spb.edu
Russian Federation, 26 Universitetskij pr. Staryi Petergof, St. Petersburg, 198504
S. M. Korneev
Institute of Chemistry
Email: konst@km3241.spb.edu
Germany, Osnabrück
K. N. Mikhelson
Institute of Chemistry
Author for correspondence.
Email: konst@km3241.spb.edu
Russian Federation, 26 Universitetskij pr. Staryi Petergof, St. Petersburg, 198504