The ion-exchange voltammetric determination of europium(III) at polymer-coated electrodes is examined. The comparison between the ion-exchange cyclic voltammetric behaviour at glassy carbon electrodes, modified with the poly(estersulphonate) Kodak AQ55 and Nafion, indicates a better suitability of the latter. The use of multiple square wave voltammetry (MSWV) results in a dramatic improvement of the signal to noise ratios of the voltammograms recorded at the modified electrodes. Eu(III) determinations by MSWV at Nafion- coated electrodes are characterised by detection limits 2-3 orders of magnitude lower than those obtained with differential pulse voltammetry and the rare earth cation can be analysed at nano- and subnanomolar levels, depending on the experimental conditions adopted.
Multiple square wave voltammetry of nanomolar and subnanomolar concentrations of europium (III) at polymer coated electrodes / L.M. Moretto, B. Brunetti, J. Chevalet, P. Ugo. - In: ELECTROCHEMISTRY COMMUNICATIONS. - ISSN 1388-2481. - 2:3(2000), pp. 175-179.
Titolo: | Multiple square wave voltammetry of nanomolar and subnanomolar concentrations of europium (III) at polymer coated electrodes |
Autori: | BRUNETTI, BARBARA (Secondo) |
Parole Chiave: | Poly(estersulfonate) ; Nafion ; Europium ; Multiple pulse ; Ion-exchange ; Voltammetry |
Settore Scientifico Disciplinare: | Settore CHIM/01 - Chimica Analitica |
Data di pubblicazione: | 2000 |
Rivista: | |
Tipologia: | Article (author) |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/S1388-2481(99)00170-8 |
Appare nelle tipologie: | 01 - Articolo su periodico |