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Issue 8, 2012
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Anodic stripping voltammetric detection of mercury(II) using Au-PEDOT modified carbon paste electrode

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Abstract

Gold-poly(3,4-)ethylenedioxythiophene (Au-PEDOT) was synthesized using a novel interfacial synthetic route. Using Au-PEDOT, carbon paste electrodes were fabricated and mercury detection was attempted exploiting gold–mercury interaction chemistry. Anodic stripping voltammetric analysis shows excellent sensitivity for micromolar level detection of mercury (LOD = 5 μM). In the amperometric detection of mercury, electrode fouling is a major problem since the memory effect cannot easily be removed. Hence, colorimetric/fluorescence techniques mostly dominate the field, using gold nanoparticle probes for the detection of mercury. Au-PEDOT carbon composite film electrodes showed excellent repeatable measurements avoiding the memory effect while detecting the mercury using anodic stripping voltammetry. As a preliminary investigation, the present carbon composite has been successfully demonstrated for mercury detection in tap water.

Graphical abstract: Anodic stripping voltammetric detection of mercury(ii) using Au-PEDOT modified carbon paste electrode

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Publication details

The article was received on 17 Feb 2012, accepted on 18 May 2012 and first published on 18 May 2012


Article type: Paper
DOI: 10.1039/C2AY25170A
Citation: Anal. Methods, 2012,4, 2486-2489

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    Anodic stripping voltammetric detection of mercury(II) using Au-PEDOT modified carbon paste electrode

    S. Anandhakumar, J. Mathiyarasu and K. L. N. Phani, Anal. Methods, 2012, 4, 2486
    DOI: 10.1039/C2AY25170A

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