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Issue 19, 2014
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The electrochemical characterization of curcumin and its selective detection in Curcuma using a graphene-modified electrode

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Abstract

A sensitive voltammetric sensor, a graphene-modified glassy carbon electrode (GR/GCE), for the detection of trace amounts of curcumin is proposed. The GR/GCE was characterized by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The electrochemical behavior of curcumin at the GR/GCE was investigated by CV and liner sweep voltammetry (LSV). The reaction mechanisms of curcumin on the GR/GCE were also investigated and discussed systematically. In addition, the currents measured by LSV presented a good linear relationship with curcumin concentrations in the range of 5.0 × 10−8 to 3.0 × 10−6 mol L−1, with a low detection limit of 3.0 × 10−8 mol L−1. The method was also applied successfully to detect curcumin in a Curcuma longa L. sample with high selectivity and accuracy, as well as good recovery.

Graphical abstract: The electrochemical characterization of curcumin and its selective detection in Curcuma using a graphene-modified electrode

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Publication details

The article was received on 24 Jun 2014, accepted on 02 Aug 2014 and first published on 04 Aug 2014


Article type: Paper
DOI: 10.1039/C4AY01492H
Citation: Anal. Methods, 2014,6, 7801-7808

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    The electrochemical characterization of curcumin and its selective detection in Curcuma using a graphene-modified electrode

    K. Li, Y. Li, L. Yang, L. Wang and B. Ye, Anal. Methods, 2014, 6, 7801
    DOI: 10.1039/C4AY01492H

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