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.

Multiple square wave voltammetry of nanomolar and subnanomolar concentrations of europium (III) at polymer coated electrodes

B. Brunetti
Secondo
;
2000

Abstract

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.
Poly(estersulfonate) ; Nafion ; Europium ; Multiple pulse ; Ion-exchange ; Voltammetry
Settore CHIM/01 - Chimica Analitica
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/176073
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