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Issue 11, 2010
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Naked-eye determination of oxalate anion in aqueous solution with copper ion and pyrocatechol violet

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Abstract

A novel strategy for the determination of oxalate anions was successfully established using a copper ion and pyrocatechol violet (PV) ensemble. The sensor ensemble can discriminate oxalate over other common anions including F, Cl, I, Br, HPO42−, PO43−, AcO, CO32−, SO42−, ClO4, P2O74−, S2− (deposited by Ag+), CN (shielded by Fe3+) and can detect oxalate at low microgram levels in quasi-physiological aqueous solutions. The detection of the oxalate anion gives rise to a rapid observable visual color change from blue to yellow.

Graphical abstract: Naked-eye determination of oxalate anion in aqueous solution with copper ion and pyrocatechol violet

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Publication details

The article was received on 10 Aug 2010, accepted on 17 Aug 2010, published on 28 Sep 2010 and first published online on 28 Sep 2010


Article type: Paper
DOI: 10.1039/C0AN00620C
Citation: Analyst, 2010,135, 2918-2923
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    Naked-eye determination of oxalate anion in aqueous solution with copper ion and pyrocatechol violet

    J. Su, Y. Sun, F. Huo, Y. Yang and C. Yin, Analyst, 2010, 135, 2918
    DOI: 10.1039/C0AN00620C

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