Voltammetric Techniques for Analysis in a Single Drop of a Solution

0506661 - BFÚ 2020 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Gajdar, J. - Goněc, T. - Jampílek, J. - Brázdová, Marie - Bábková, Zuzana - Fojta, Miroslav - Barek, J. - Fischer, J.
Voltammetric Techniques for Analysis in a Single Drop of a Solution.
PROCEEDINGS OF THE 13TH INTERNATIONAL STUDENTS CONFERENCE MODERN ANALYTICAL CHEMISTRY. Prague: Charles University of Prague, 2017 - (Nesmerak, K.), Č. 2017 (2017), s. 46-50. ISBN 978-80-7444-052-6.
[International Students Conference ”Modern Analytical Chemistry” /13./. Prague (CZ), 21.09.2017-22.09.2017]
Grant CEP: GA ČR GBP206/12/G151
Institucionální podpora: RVO:68081707
Klíčová slova: herbicidal activity * antibacterial * electrodes * system
Obor OECD: Analytical chemistry

This contribution describes miniaturization of voltammetric methods and some of the main problems caused by reducing the sample volume to 20 mu L. This study was carried out in dimethyl sulfoxide solutions and buffered aqueous solutions with 10% DMSO at a glassy carbon electrode. A novel antibiotic agent, 1-hydroxy-N-(4-nitrophenyl) naphthalene-2-carboxamide, was used as a model substance. This analyte was determined by cathodic and anodic voltammetry. Elimination of the negative influence of dissolved oxygen was performed in various manners. Two most effective methods were square wave voltammetry that can be used in the presence of dissolved oxygen and removal of oxygen in a microcell with nitrogen atmosphere inside.
Trvalý link: http://hdl.handle.net/11104/0297864