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Fabrication of a chemically modified electrode containing 12-molybdophosphoric acid by the sol-gel technique and its application as an amperometric detector for iodate

机译:溶胶-凝胶技术制备含12钼磷酸的化学修饰电极及其在碘酸盐安培检测器中的应用

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摘要

Novel sol-gel glass thin films containing 12-molybdophosphoric acid were achieved on the surface of a glassy carbon electrode by the sol-gel technique. The electrochemical behavior of the modified electrode was studied in detail. The new chemically modified electrode was shown to exhibit a high electrocatalytic response for the reduction of iodate. Iodate in table salt was determined amperometrically in pH 2.6 acidic aqueous solution at the modified electrode with satisfactory results. The method had a linear range from 5 x 10(-6) to 6 x 10(-3) M and a detection limit of 1 x 10(-6) M (signal-to-noise ratio 3). (C) 1999 Elsevier Science B.V. All rights reserved.
机译:通过溶胶-凝胶技术,在玻璃碳电极的表面上获得了一种新型的包含12-钼磷酸的溶胶-凝胶玻璃薄膜。详细研究了改性电极的电化学行为。新的化学修饰电极显示出对碘酸盐还原的高电催化响应。在修饰电极上的pH 2.6酸性水溶液中以安培法测定食盐中的碘酸盐,结果令人满意。该方法的线性范围为5 x 10(-6)到6 x 10(-3)M,检测极限为1 x 10(-6)M(信噪比3)。 (C)1999 Elsevier Science B.V.保留所有权利。

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