Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.1/3208
Título: Performance of ex situ bismuth film rotating disk electrode in trace metal analysis by stripping chronopotentiometry: definition of the depletion regime and optimization of experimental parameters
Autor: Rocha, L. S.
Pereira, E.
Duarte, A. C.
Pinheiro, J. P.
Palavras-chave: Bismuth film electrode
Fresh water
Heavy metals
Stripping chronopotentiometry
Thin mercury film electrode
Data: 2011
Editora: Wiley
Citação: Rocha, L. S.; Pereira, E.; Duarte, A. C.; Pinheiro, J. P.Performance of Ex Situ Bismuth Film Rotating Disk Electrode in Trace Metal Analysis by Stripping Chronopotentiometry: Definition of the Depletion Regime and Optimization of Experimental Parameters, Electroanalysis, 23, 8, 1891-19, 2011.
Resumo: The potentiality of the ex situ deposited bismuth film electrode, allied to the rotation of a glassy carbon disk electrode (BiFE-RDE), was exploited in trace metal analyses of lead(II) and cadmium(II) by stripping chronopotentiometry (SCP). A single BiFE (6.2 nm film thickness) can be used for a 1-day term with no significant variation in the analytical signal. The limit of detection (3s) for a deposition time of 40 s and an oxidation current of 15 10 9 A was 1.5 10 8 M for Pb(II) and 3.0 10 8 M for Cd(II). BiFE-RDE was successfully applied to the direct SCP determination of lead(II) in a fresh water certified material.
Peer review: yes
URI: http://hdl.handle.net/10400.1/3208
DOI: http://dx.doi.org/10.1002/elan.201100119
ISSN: 1040-0397
Aparece nas colecções:FCT2-Artigos (em revistas ou actas indexadas)

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