caa a22 4500 44587967X CHVBK 20180317145538.0 cr unu---uuuuu 170323e20110201xx s 000 0 eng 10.1007/s00604-010-0475-1 doi (NATIONALLICENCE)springer-10.1007/s00604-010-0475-1 Electrochemical oxidation and nanomolar detection of acetaminophen at a carbon-ceramic electrode modified by carbon nanotubes: a comparison between multi walled and single walled carbon nanotubes [Elektronische Daten] [Biuck Habibi, Mojtaba Jahanbakhshi, Mohammad Pournaghiazar] Carbon-ceramic electrodes (CCE) modified with carbon nanotubes were prepared, and the electrochemical behavior towards acetaminophen (ACOP) was investigated using both a bare CCE and electrodes modified with either single walled carbon nanotubes (SWCNT) or multi walled carbon nanotubes (MWCNT) in an effort to understand which of them is the better choice in terms of electrocatalyzing the oxidation of ACOP, and thus for sensing it. The SWCNT are found to be the better material in significantly enhancing the oxidation peak current and improving the reversibility of the oxidation. Under optimal conditions, linearity between the oxidation peak current and the concentration of ACOP is obtained for the concentration range from 40nM to 85μM, with a detection limit of 25nM. Finally, ACOP was successfully determined with the SWCNT modified electrode in pharmaceutical samples. Cyclic voltammograms recorded at the bare CCE (1, 4); MWCNT/CCE (2, 5); SWCNT/CCE (3, 6) in 0.1 M phosphate buffer solution of pH 7.0 in the absence and in the presence of 4.0 mM ACOP, respectively. Scan rate: 50 mV s-1. Springer-Verlag, 2010 Acetaminophen nationallicence Electrocatalysis nationallicence Nanomolar detection nationallicence Carbon nanotubes nationallicence Carbon-ceramic electrode nationallicence Habibi Biuck Electroanalytical Chemistry Laboratory, Department of Chemistry, Faculty of Sciences, Azarbaijan University of Tarbiat Moallem, 53714-161, Tabriz, Iran aut Jahanbakhshi Mojtaba Electroanalytical Chemistry Laboratory, Department of Chemistry, Faculty of Sciences, Azarbaijan University of Tarbiat Moallem, 53714-161, Tabriz, Iran aut Pournaghiazar Mohammad Electroanalytical Chemistry Laboratory, Faculty of Chemistry, University of Tabriz, 5166616471, Tabriz, Iran aut Microchimica Acta Springer Vienna 172/1-2(2011-02-01), 147-154 0026-3672 172:1-2<147 2011 172 604 https://doi.org/10.1007/s00604-010-0475-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00604-010-0475-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Habibi Biuck Electroanalytical Chemistry Laboratory, Department of Chemistry, Faculty of Sciences, Azarbaijan University of Tarbiat Moallem, 53714-161, Tabriz, Iran aut NATIONALLICENCE 700 1- Jahanbakhshi Mojtaba Electroanalytical Chemistry Laboratory, Department of Chemistry, Faculty of Sciences, Azarbaijan University of Tarbiat Moallem, 53714-161, Tabriz, Iran aut NATIONALLICENCE 700 1- Pournaghiazar Mohammad Electroanalytical Chemistry Laboratory, Faculty of Chemistry, University of Tabriz, 5166616471, Tabriz, Iran aut NATIONALLICENCE 773 0- Microchimica Acta Springer Vienna 172/1-2(2011-02-01), 147-154 0026-3672 172:1-2<147 2011 172 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer