Abstract
Titanium ferricyanide gel is found to possess good ion-exchange capacity, mechanical and chemical stability, and selectivity. An Araldite-based membrane of this compound can be used to estimate K+ ions in the concentration range 10−1–10−4 M. The sensor has a very short response time and remains stable for 2 to 3 months. There is no serious interference by bivalent and multivalent ions. Among the monovalent cations only Na+ and NH +4 may cause significant interference.
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Srivastava, S.K., Singh, A. & Singh, M. Solid membrane sensor for potassium ions. Mikrochim Acta 116, 123–129 (1994). https://doi.org/10.1007/BF01244070
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DOI: https://doi.org/10.1007/BF01244070