Inorganic Salts Trapped in Neutral Carrier Ion-Selective Electrode Membranes form Ion-Exchange Sites
- 5 December 1988
- journal article
- research article
- Published by Taylor & Francis in Analytical Letters
- Vol. 21 (12) , 2165-2175
- https://doi.org/10.1080/00032718808059900
Abstract
Deliberately added hydrophilic salt contaminations behave as ion-exchange sites in the plasticized PVC membrane of a neutral carrier ion-selective electrode. The added salt does not influence the potenticmetric performance of the membrane. Since the membrane without added salt is itself an ion-exchanger, its ion-exchange capacity may be linked to ionizable hydrophilic impurities.Keywords
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