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KMID : 0379520080240010023
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한국독성학회지
2008 Volume.24 No. 1 p.23 ~ p.28
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Voltammetric Assay of Mercury Ion in Fish Kidneys
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Ly Suw-Young
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Abstract
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Voltammetric analysis of mercury ions was developed using paste electrodes (PEs) with DNA and carbon nanotube mixed electrodes. The optimized analytical results of the cyclic voltammetry (CV) of the 1~14 ng L-1 Hg(Ⅱ) concentration and the square wave (SW) stripping voltammetry of the 1~12 ng L-1 Hg(Ⅱ) working range within an accumulation time of 400 seconds were obtained in 0.1 M NH₄H₂PO₄ electrolyte solutions of pH 4.0. For the relative standard deviations of the 1 ng L-1 Hg(Ⅱ), which were observed at 0.078% (n = 15) at the optimum conditions, the low detection limit (S/N) was pegged at 0.2 ng L-1 (7.37 × 10-13 M) for Hg(Ⅱ). The results can be applied to assays in biological fish kidneys and wastewater samples.
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KEYWORD
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Hg(Ⅱ), DNA, Carbon nanotube, Voltammetry, Fish kidney
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