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Start Over Author "Wang-Zhuan Liu" Journal journal of analytical chemistry
2 results on '"Wang-Zhuan Liu"'

1. A facile and fast electrochemical method for the simultaneous determination of o-dihydroxybenzene and p-dihydroxybenzene using a surfactant

Author

Xiao-Gang Wang, Wang-Zhuan Liu, Qing-Sheng Wu, and Yaping Ding

Subjects
Detection limit, Chemistry, Analytical technique, Analytical chemistry, Buffer solution, Electrochemistry, Chloride, Analytical Chemistry, chemistry.chemical_compound, Pulmonary surfactant, medicine, Pyridinium, Differential pulse voltammetry, medicine.drug
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.

Published
2009

2. A facile and fast electrochemical method for the simultaneous determination of o-dihydroxybenzene and p-dihydroxybenzene using a surfactant.

Author

Wang-Zhuan Liu, Wang, Xiao-Gang, Qing-Sheng Wu, and Ya-Ping Ding

Subjects
*BENZENE, *SURFACE active agents, *CARBON electrodes, *VOLTAMMETRY, *ANALYTICAL chemistry
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. [ABSTRACT FROM AUTHOR]

Published
2009
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