Simultaneous Determination of Hydroquinone, Catechol and Resorcinol at Graphene Doped Carbon Ionic Liquid ElectrodeReport as inadecuate




Simultaneous Determination of Hydroquinone, Catechol and Resorcinol at Graphene Doped Carbon Ionic Liquid Electrode - Download this document for free, or read online. Document in PDF available to download.

International Journal of ElectrochemistryVolume 2012 2012, Article ID 243031, 8 pages

Research ArticleAnhui key laboratory of Chemo-Biosensing, School of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, China

Received 10 March 2012; Accepted 28 March 2012

Academic Editor: Shen-Ming Chen

Copyright © 2012 Li Ma and Guang-Chao Zhao. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A new composite electrode has been prepared with doping graphene into the paste consisting graphite and ionic liquid, n-octyl-pyridinum hexafluorophosphate OPFP. This electrode shows an excellent electrochemical activity for the redox of hydroquinone HQ, catechol CC, and resorcinol RS. In comparison with bare paste electrode, the redox peaks of three isomers of dihydroxybenzene can be obviously, simultaneously observed at graphene doping paste electrode. Under the optimized condition, the simultaneous determination of HQ, CC, and RS in their ternary mixture can be carried out with a differential pulse voltammetric technique. The peak currents are linear to the concentration of HQ, CC, and RS in the range form to , to , and to  mol L

, respectively. The limits of detection are  mol L

for HQ,  mol L

for CC, and  M for RS, respectively.





Author: Li Ma and Guang-Chao Zhao

Source: https://www.hindawi.com/



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