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- W2007308519 abstract "The simultaneous voltammetric determination of dihydroxybenzene isomers was investigated using cyclic and differential pulse voltammetries at the amino-functionalized SBA-15 mesoporous silica-modified carbon paste electrode (NH2-SBA15/CPE) in phosphate buffer solution (pH 6.0). The NH2-SBA15/CPE showed a larger peak current and higher selectivity for the dihydroxybenzene isomers in comparison with the bare carbon paste electrode (CPE) and SBA-15 mesoporous silica-modified carbon paste electrode (SBA15/CPE). The oxidation peak potential difference between hydroquinone (HQ) and catechol (CC) was 115 mV and was 396 mV between catechol and resorcinol (RC). This indicated that catechol, resorcinol and hydroquinone could be identified entirely at the NH2-SBA15/CPE. Under the optimized conditions, the amperometric currents were linear over ranges from the following: 0.8–160 μmol L−1 for hydroquinone, 1.0–140 μmol L−1 for catechol and 2.0–160 μmol L−1 for resorcinol. The detection limits were 0.3, 0.5 and 0.8 μmol L−1, respectively. The proposed electrode can be applied to the simultaneous determination of dihydroxybenzene isomers in mixtures without previous chemical or physical separations." @default.
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- W2007308519 date "2011-02-01" @default.
- W2007308519 modified "2023-09-28" @default.
- W2007308519 title "Electrochemical behavior and simultaneous determination of dihydroxybenzene isomers at a functionalized SBA-15 mesoporous silica modified carbon paste electrode" @default.
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- W2007308519 doi "https://doi.org/10.1016/j.electacta.2010.11.048" @default.
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