Article ID Journal Published Year Pages File Type
177209 Dyes and Pigments 2011 6 Pages PDF
Abstract

A sensor membrane based on the fluorescence enhancement of a novel triazine-thione derivative, 4-ethyl-5-hydroxy-5,6-di-pyridin-2-yl-4,5-dihydro-2H-[1,2,4]triazine-3-thione, was capable of determining mercury(II) with high selectivity over the range 5.0 × 10−10 and 5.0 × 10−5 mol L−1 with a limit of detection of 1.8 × 10−10 mol L−1 (0.036 μg L−1). The sensor can be regenerated using 5% thiourea in 1.0 mol L−1 HCl solution. The sensor also displayed unique selectivity toward mercury(II) ion with respect to other common metal cations and was applied to the determination of mercury(II) in tap water and human hair samples. The accuracy of the results were comparable to those obtained by cold vapour atomic fluorescence spectrometry.

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Physical Sciences and Engineering Chemical Engineering Chemical Engineering (General)
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