Simultaneous voltammetric determination of dihydroxybenzene isomers using a poly(acid chrome blue K)/carbon nanotube composite electrode |
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Authors: | Pinghua Yang Wanzhi Wei Liu Yang |
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Affiliation: | (1) State Key Laboratory of Chemical, Biological Sensing Technologies & Chemometrics, Hunan University, 410082 Changsha, P.R. China;(2) College of Chemistry and Chemical Engineering, Jiujiang University, 332005 Jiujiang, P.R. China |
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Abstract: | A novel modified electrode was fabricated by electropolymerization of acid chrome blue K at a multi-walled carbon nanotubes modified glassy carbon electrode. The electrode developed was used for simultaneous determination of the isomers of dihydroxybenzene in environmental samples using first order linear sweep derivative voltammetry with background subtraction. A linear relationship between peak current and concentration of hydroquinone, catechol and resorcinol was obtained in the range of 1 × 10−6–1 × 10−4 mol L−1, and the detection limits were estimated to be 1 × 10−7, 1 × 10−7 and 9 × 10−8 mol L−1, respectively. The constructed electrode showed excellent reproducibility and stability. Real water samples were analyzed and satisfactory results were obtained. This method provides a new way of constructing electrodes for environmental and biological analysis. |
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Keywords: | : Dihydroxybenzene isomers multi-walled carbon nanotubes electropolymerization acid chrome blue K. |
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