Poly(ester sulphonic acid) coated mercury thin film electrodes: characterization and application in batch injection analysis stripping voltammetry of heavy metal ions
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Mercury-thin film electrodes coated with a thin film of poly(ester sulphonic acid) (PESA) have been investigated for
application in the analysis of trace heavy metals by square wave anodic stripping voltammetry using the batch
injection analysis (BIA) technique. Different polymer dispersion concentrations in water/acetone mixed solvent are
investigated and are characterised by electrochemical impedance measurements on glassy carbon and on mercury film
electrodes. The influence of electrolyte anion, acetate or nitrate, on polymer film properties is demonstrated, acetate
buffer being shown to be preferable for stripping voltammetry applications. Although stripping currents are between
30 and 70% less at the coated than at bare mercury thin film electrodes, the influence of model surfactants on
stripping response is shown to be very small. The effect of the composition of the modifier film dispersion on
calibration plots is shown; however, detection limits of around 5 nM are found for all modified electrodes tested. This
coated electrode is an alternative to Nafion-coated mercury thin film electrodes for the analysis of trace metals in
complex matrices, particularly useful when there is a high concentration of non-ionic detergents. © 2000 Elsevier
Science B.V. All rights reserved.
Como referenciar
BRETT, C.M.A.; FUNGARO, D.A. Poly(ester sulphonic acid) coated mercury thin film electrodes: characterization and application in batch injection analysis stripping voltammetry of heavy metal ions. Talanta, v. 50, n. 6, p. 1223-1231, 2000. DOI: 10.1016/S0039-9140(99)00232-5. Disponível em: http://repositorio.ipen.br/handle/123456789/7184. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.