caa a22 4500 445881097 CHVBK 20180317145543.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1007/s00604-010-0530-y doi (NATIONALLICENCE)springer-10.1007/s00604-010-0530-y Sensitive simultaneous determination of catechol and hydroquinone using a gold electrode modified with carbon nanofibers and gold nanoparticles [Elektronische Daten] [Zhaohui Huo, Yanli Zhou, Qin Liu, Xulun He, Yong Liang, Maotian Xu] A highly sensitive electrochemical sensor for the simultaneous determination of catechol (CC) and hydroquinone (HQ) was fabricated by electrodeposition of gold nanoparticles onto carbon nanofiber film pre-cast on an Au electrode. Both CC and HQ cause a pair of quasi-reversible and well-defined redox peaks at the modified electrode in pH7.0 solution. Simultaneously, the oxidation peak potentials of CC and HQ become separated by 112mV. When simultaneously changing the concentrations of both CC and HQ, the response is linear between 9.0μM and 1.50mM. In the presence of 0.15mM of the respective isomer, the electrode gives a linear response in the range from 5.0 to 350μM, and from 9.0 to 500μM for CC and HQ, respectively, and detection limits are 0.36 and 0.86μM. The method was successfully examined for real sample analysis with high selectivity and sensitivity. Figure Highly sensitive and simultaneous determination of catechol and hydroquinone was realized at the GNPs/CNF/Au electrode (d), and its peak currents had nearly two times higher than that of the CNF/Au electrode(c), while only one oxidation peak was observed for both analytes at the bare Au electrode (a) and GNPs/Au electrode (b) Springer-Verlag, 2011 Simultaneous determination nationallicence Carbon nanofiber nationallicence Gold nanoparticles nationallicence Hydroquinone nationallicence Catechol nationallicence Huo Zhaohui Department of Chemistry and Environment, South China Normal University, 510631, Guangzhou, People's Republic of China aut Zhou Yanli Department of Chemistry, Henan Key Laboratory Cultivation Base of Nanobiological Analytical Chemistry, Shangqiu Normal University, 476000, Shangqiu, People's Republic of China aut Liu Qin Department of Chemistry and Environment, South China Normal University, 510631, Guangzhou, People's Republic of China aut He Xulun Department of Chemistry and Environment, South China Normal University, 510631, Guangzhou, People's Republic of China aut Liang Yong Department of Chemistry and Environment, South China Normal University, 510631, Guangzhou, People's Republic of China aut Xu Maotian Department of Chemistry, Henan Key Laboratory Cultivation Base of Nanobiological Analytical Chemistry, Shangqiu Normal University, 476000, Shangqiu, People's Republic of China aut Microchimica Acta Springer Vienna 173/1-2(2011-04-01), 119-125 0026-3672 173:1-2<119 2011 173 604 https://doi.org/10.1007/s00604-010-0530-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00604-010-0530-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Huo Zhaohui Department of Chemistry and Environment, South China Normal University, 510631, Guangzhou, People's Republic of China aut NATIONALLICENCE 700 1- Zhou Yanli Department of Chemistry, Henan Key Laboratory Cultivation Base of Nanobiological Analytical Chemistry, Shangqiu Normal University, 476000, Shangqiu, People's Republic of China aut NATIONALLICENCE 700 1- Liu Qin Department of Chemistry and Environment, South China Normal University, 510631, Guangzhou, People's Republic of China aut NATIONALLICENCE 700 1- He Xulun Department of Chemistry and Environment, South China Normal University, 510631, Guangzhou, People's Republic of China aut NATIONALLICENCE 700 1- Liang Yong Department of Chemistry and Environment, South China Normal University, 510631, Guangzhou, People's Republic of China aut NATIONALLICENCE 700 1- Xu Maotian Department of Chemistry, Henan Key Laboratory Cultivation Base of Nanobiological Analytical Chemistry, Shangqiu Normal University, 476000, Shangqiu, People's Republic of China aut NATIONALLICENCE 773 0- Microchimica Acta Springer Vienna 173/1-2(2011-04-01), 119-125 0026-3672 173:1-2<119 2011 173 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer