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Issue 16, 2014
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Colorimetric detection of mercury based on a strip sensor

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Environmental pollution with mercury is a global problem. A fast and accurate detection method is urgently required as an alternative to instrument detection, whose cost is very high. Here we present a sensor for mercury (Hg(II)) detection which has promising analytical applications. The sample treatment process was integrated with the antibody–antigen reaction process. Adequate pre-treatment time before the test resulted in high sensitivity. The strip results showed an excellent linear relationship with the concentration of Hg(II) between 1 and 10 ng mL−1, and the detection limit was 0.23 ng mL−1. Other metals had a negligible effect on the detection of Hg(II). The accuracy of the method was evaluated by adding different concentrations of Hg(II) to tap water samples. The sample recoveries ranged from 103.2% to 108.7%. This immunoassay is simple and portable, which makes it very useful for rapid monitoring of Hg(II) contamination in field analysis.

Graphical abstract: Colorimetric detection of mercury based on a strip sensor

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The article was received on 12 Nov 2013, accepted on 09 Mar 2014 and first published on 11 Mar 2014

Article type: Paper
DOI: 10.1039/C3AY42002G
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Anal. Methods, 2014,6, 6247-6253

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    Colorimetric detection of mercury based on a strip sensor

    C. Xing, L. Liu, X. Zhang, H. Kuang and C. Xu, Anal. Methods, 2014, 6, 6247
    DOI: 10.1039/C3AY42002G

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