Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Advances in multiple square wave techniques for ion-exchange voltammetry at ultratrace levels: the europium(III) case
Autore:
Moretto, LM; Chevalet, J; Mazzocchin, GA; Ugo, P;
Indirizzi:
Univ Venice, Dept Phys Chem, I-30123 Venice, Italy Univ Venice Venice Italy I-30123 , Dept Phys Chem, I-30123 Venice, Italy Univ Paris 06, Lab Electrochim, UMR 7612 CNRS, F-75252 Paris 05, France Univ Paris 06 Paris France 05 m, UMR 7612 CNRS, F-75252 Paris 05, France
Titolo Testata:
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
fascicolo: 1-2, volume: 498, anno: 2001,
pagine: 117 - 126
Fonte:
ISI
Lingua:
ENG
Soggetto:
POLYMER-COATED ELECTRODES; COMPLEXES; STORAGE; FILMS; YB3+; EU3+;
Keywords:
Nafion (R); europium; ultratrace analysis; multiple pulse; ion-exchange; voltammetry;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Ugo, P Univ Venice, Dept Phys Chem, S Marta 2137, I-30123 Venice, Italy Univ Venice S Marta 2137 Venice Italy I-30123 -30123 Venice, Italy
Citazione:
L.M. Moretto et al., "Advances in multiple square wave techniques for ion-exchange voltammetry at ultratrace levels: the europium(III) case", J ELEC CHEM, 498(1-2), 2001, pp. 117-126

Abstract

This paper reports on the use of multiple square wave voltammetry, MSWV, for the determination of europium(III) preconcentrated by ion-exchange at glassy carbon electrodes coated with Nafion(R). For this aim, a double-differential (DD) mode of MSWV is implemented; with this mode, background signalsare always straight lines while the analyte signal is given as a twin opposite peak system which corresponds approximately to the instrumental doubledifferential of the classical voltammetric wave. The influence of scan parameters and experimental conditions on MSW-DD responses for europium(III) determinations at the modified electrode is examined. Detection limits and sensitivities obtained using MSW-DD are significantly superior to those achievable by classical pulsed techniques. The method is applied to the determination of ultratrace europium(III) concentrations in the 10(-11)-10(-10) hirange in the cooling water of a nuclear plant; results obtained by the MSW-DD ion-exchange voltammetric approach compare well with those obtained by ICP-MS. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 06/04/20 alle ore 05:07:23