Jump to main content
Jump to site search

Issue 4, 1993
Previous Article Next Article

Incorporation of hydroxamic acid ligands into Nafion film electrodes

Abstract

This paper describes studies on Nafion-coated glassy carbon electrodes incorporating hydroxamic acids. Desferrioxamine, a trihydroxamic acid, and glycine hydroxamate, a monohydroxamic acid, can be incorporated by ion exchange into the Nafion film. These ligands were detected in the film visually, after reaction with iron(III), and electrochemically, by voltammetric oxidation. The complex of iron(III) with desferrioxamine was electrochemically active at the iron(III) centre in the Nafion film. The electrochemistry of this complex in the film agrees well with the solution electrochemistry reported by other workers: irreversible at low pH and reversible at high pH. The ability of the modified electrode to act as a sensor for iron(III) was assessed. Complexation of iron(III) from dilute solution into the polymer film was possible, and 5 × 10–7 mol l–1 iron(III) could be detected after a 10 min preconcentration, with differential-pulse voltammetric detection in pH 10 ammoniacal buffer.

Back to tab navigation

Article type: Paper
DOI: 10.1039/AN9931800355
Citation: Analyst, 1993,118, 355-359
  •   Request permissions

    Incorporation of hydroxamic acid ligands into Nafion film electrodes

    D. W. M. Arrigan, B. Deasy, J. D. Glennon, B. Johnston and G. Svehla, Analyst, 1993, 118, 355
    DOI: 10.1039/AN9931800355

Search articles by author

Spotlight

Advertisements