Abstract
A fast and convenient analytical technique has been suggested to detect dihydroxybenzene (DHB) isomers directly and simultaneously. In 0.1 M HAc-NaAc buffer solution (pH 5.6), the reduction peaks of p -DHB and o -DHB were partly separated by differential pulse voltammetry at the glassy carbon electrode. By adding a surfactant (cetyl pyridinium chloride) to enhance the detection sensitivity and using a semi-derivative technique to improve the separation, p-DHB and o-DHB were detected simultaneously. The linear calibration ranges were 1.2 × 10−6 to 1.0 × 10−4 M for p -DHB and 8.2 × 10−7 to 1.0 × 10−4 M for o -DHB, with detection limits of 3.6 × 10−7 and 2.4 × 10−7 M, respectively. The proposed method has been applied to the direct determination of DHB isomers in water sample, and the results were excellent.
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Liu, WZ., Wang, XG., Wu, QS. et al. A facile and fast electrochemical method for the simultaneous determination of o-dihydroxybenzene and p-dihydroxybenzene using a surfactant. J Anal Chem 64, 54–58 (2009). https://doi.org/10.1134/S1061934809010110
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DOI: https://doi.org/10.1134/S1061934809010110