On the suppression of zinc-copper interactions in square wave anodic stripping voltammetry in flowing solution by addition of gallium ions

• Tipo: Artigo em Revista Científica Internacional
• Data: 1997

Autores

Brett, CMA (Autor) Outra; M. Beatriz Q. Garcia (Autor) FFUP; Lima, JLFC (Autor) FFUP

Revista

Título: Analytica Chimica Acta

Vol. 339

Páginas: 167-172

ISSN: 0003-2670

Editora: Elsevier

Indexação

ISI Web of Knowledge - 25 Citações

Scopus - 27 Citações

Outras Informações

ID Authenticus: P-001-BYD

DOI: 10.1016/s0003-2670(96)00459-x

Abstract (EN): The problems arising from the formation of copper-zinc intermetallic compounds in square wave anodic stripping voltammetry at wall-jet mercury thin-film electrodes in continuous flow systems have been investigated. These effects are reduced to zero by spiking the analyte solution with gallium ions and ensuring a sufficiently low value of pH, either by using acetate buffer or acidifying the generally-used sodium perchlorate electrolyte. Advantages of this approach are assessed, as are the benefits of stopping solution flow during the determination step of each experiment.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6