Selectivity of voltammetric determination at an ion-exchanger modified electrode |
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| Affiliation: | 1. Clinica Neurologica, Dipartimento di Medicina, Università degli Studi di Perugia, Ospedale Santa Maria della Misericordia, S. Andrea delle Fratte, 06132 Perugia, Italy;2. Sezione di Fisiologia e Biochimica, Dipartimento di Medicina Sperimentale, Università degli Studi di Perugia, S. Andrea delle Fratte, 06132 Perugia, Italy;3. Università Cattolica del Sacro Cuore, Istituto di Anatomia Umana e Biologia Cellulare, Largo Francesco Vito 1, 00168 Rome, Italy;4. IRCCS, Fondazione Santa Lucia, via del Fosso di Fiorano 64, 00143 Rome, Italy |
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| Abstract: | ![]()
An expression of the selectivity value for the voltammetric determination of an ionic analyte in the presence of interfering component(s) at an electrode chemically modified with an ion-exchanger has been developed and applied to the analysis of a model metal-ion mixture. Using distribution coefficient values, the predicted selectivity value was calculated and compared with that obtained experimentally. The approach allows a choice of the ion-exchange resin and experimental conditions for a given analytical task. |
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