Use of a crown ether-heteropoly acid precipitate as a potassium ion-selective membrane electrode |
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| Authors: | Anita Rani Surender Kumar N. R. Bannerjee |
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| Affiliation: | (1) Chemistry Department, Delhi University, 110007 Delhi, India |
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| Abstract: | Summary A Potassium ion-selective electrode based on dibenzo-18-crown-6-tungstophosphoric acid precipitate membrane is prepared and conditions for the best functioning have been investigated. The working concentration and pH-range of the electrode is 2.0×10–2 to 1.3×10–6 mol/l and 2.9–6.5, respectively. The selectivity coefficient values for a large number of cations are quite low except for caesium and ammonium ions. The electrode can tolerate non-aqueous content upto 20%.
Kaliumion-sensitive Membranelektrode auf Basis von Kronenether-Heteropolysäure |
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