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- W2059685770 abstract "A potentiometric sensor is reported for the mercury(II) detection, which uses substituted thiourea-functionalized nanoporous silica (FTU-LUS-1) as the sensitive material. Substituted thiourea (FTU) and FTU-LUS-1 were first prepared and then characterized by 1H NMR, 19F NMR, 13C NMR, FTIR, XRD, TG and CNS elemental analysis. The electrodes with FTULUS-1 proportion of 10.0 wt% demonstrated very stable potentials. The prepared electrodes exhibit a Nernstian slope of 28.4 ± 1.0 mV decade−1 for mercury(II) ion over a wide concentration range of 1.0 × 10−7 to 1.0 × 10−1 mol dm–3 . The electrode exhibited a detection limit of 7.0 × 10–8 mol dm−3 . Moreover, the selectivity coefficient, response time, performance, sensitivity and stability of the modified electrode were investigated. The electrode presented a response time of about 35 s, a high performance and sensitivity in a wide range of cation activities as well as good long term stability (more than 9 months). The method was satisfactory and could also be used to monitor the mercury(II) ion concentration in waste water and fish samples." @default.
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- W2059685770 date "2009-06-01" @default.
- W2059685770 modified "2023-10-18" @default.
- W2059685770 title "Potentiometric Detection of Mercury(II) Ions Using a Carbon Paste Electrode Modified with Substituted Thiourea-Functionalized Highly Ordered Nanoporous Silica" @default.
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- W2059685770 doi "https://doi.org/10.2116/analsci.25.789" @default.
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