Using Poly-L-Histidine Modified Glassy Carbon Electrode to Trace Hydroquinone in the Sewage Water

A sensitive voltammetric method for trace measurements of hydroquinone in the sewage water is described. The poly-L-histidine is prepared to modify the glassy carbon electrode in order to improve the electrochemical catalysis of interesting substances such as hydroquinone. The influence of the base...

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Bibliographic Details
Published in:International journal of electrochemistry 2014-01, Vol.2014 (2014), p.1-7
Main Authors: Wang, Bin, Huang, Jun Steed
Format: Article
Language:English
Subjects:
Aqueous solutions
Calibration
Carbon
Electrodes
Experiments
Glassy carbon
Hydroquinone
Industrial wastes
Mathematical models
Nanoparticles
Quantum dots
Scanning
Scanning electron microscopy
Sewage
Stem cells
Voltammetry
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Summary:A sensitive voltammetric method for trace measurements of hydroquinone in the sewage water is described. The poly-L-histidine is prepared to modify the glassy carbon electrode in order to improve the electrochemical catalysis of interesting substances such as hydroquinone. The influence of the base solution, pH value, and scanning speed on the tracing of hydroquinone is discussed, and the experimental procedures and conditions are optimized. The laboratory results show that it is possible to construct a linear calibration curve between the peak current of hydroquinone on modified electrode and its concentration at the level of 0.00001 mol/L. The potential limitation of the method is suggested by a linear peaking shift model as well. The method was successfully applied to the determination of hydroquinone in the actual sample of industrial waste water.
ISSN:2090-3529
2090-3537
DOI:10.1155/2014/701284