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Issue 15, 2016
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Anodic stripping voltammetry with graphite felt electrodes for the trace analysis of silver

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Abstract

Graphite felt (GF) is a mass produced porous carbon electrode material commonly used in redox flow batteries. Previous studies have suggested GF may have valuable applications in electroanalysis as a low cost disposable carbon electrode material, although most GF sensors have used flow cell arrangements. In this work, an elegant wetting technique is employed that allows GF electrodes to be used in quiescent solution to detect trace levels of silver in water via anodic stripping voltammetry. GF electrodes display good repeatability and a limit of detection of 25 nM of Ag+ in 0.1 M HNO3, with a linear range spanning two orders of magnitude. This compares to a value of around 140 nM when using conventional carbon electrodes. Combined with their low cost and disposable nature, the results suggest GF electrodes can make a valuable contribution to electroanalysis.

Graphical abstract: Anodic stripping voltammetry with graphite felt electrodes for the trace analysis of silver

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Publication details

The article was received on 11 Mar 2016, accepted on 31 May 2016 and first published on 31 May 2016


Article type: Paper
DOI: 10.1039/C6AN00590J
Analyst, 2016,141, 4742-4748
  • Open access: Creative Commons BY license
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    Anodic stripping voltammetry with graphite felt electrodes for the trace analysis of silver

    T. J. Davies, Analyst, 2016, 141, 4742
    DOI: 10.1039/C6AN00590J

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