Voltammetric determination of 1-hydroxy-N-(4-nitrophenyl)naphthalene-2-carboxamide by voltammetry at a glassy carbon electrode in microvolumes of dimethyl sulfoxide

0506692 - BFÚ 2020 RIV CZ eng C - Conference Paper (international conference)
Gajdar, J. - Goněc, T. - Jampílek, J. - Brázdová, Marie - Bábková, Zuzana - Fojta, Miroslav - Barek, J. - Fischer, J.
Voltammetric determination of 1-hydroxy-N-(4-nitrophenyl)naphthalene-2-carboxamide by voltammetry at a glassy carbon electrode in microvolumes of dimethyl sulfoxide.
Proceedings of the 12th International students conference Modern Analytical Chemistry. Praha: VŠCHT, 2016 - (Nesměrák, K.), Č. 2016 (2016), s. 23-27. ISBN 978-80-7444-044-1.
[International students conference ´Modern Analytical Chemistry´ /12./. Praha (CZ), 22.09.2016-23.09.2016]
R&D Projects: GA ČR GBP206/12/G151
Institutional support: RVO:68081707
Keywords : herbicidal activity * antibacterial * oxidation
OECD category: Physical chemistry

Voltammetric reduction and oxidation of 1-hydroxy-N-(4-nitrophenyl) naphthalene-2-carboxamide was investigated at glassy carbon electrode in dimethyl sulfoxide. Cyclic voltammetry was used to investigate the mechanism of reduction of nitro group and oxidation of hydroxyl group. The analyte was successfully determined in dimethyl sulfoxide by differential pulse voltammetry and the whole voltammetric procedure was miniaturised. Square wave voltammetry was employed to reduce the interference from dissolved oxygen. Determination in one drop (20 mu L) of 0.1 mol L-1 tetrabutyl-ammonium tetrafluoroborate in dimethyl sulfoxide provided very similar results compared to determination in the bulk solution. Limits of quantification were 5.0 mu mol L-1 for cathodic voltammetry and 5.3 mu mol L-1 for anodic voltammetry.
Permanent Link: http://hdl.handle.net/11104/0297890