Browsing by Author "Morozova, T.V."

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Electroanalytical Determination of Two Accase-Inhibing Herbicides in Soybean Products. a Theoretical Insight
(Universidade Federal de Mato Grosso do Sul, Departamento de Quimica, 2025) Tkach, V.V.; Morozova, T.V.; da Paiva Martins, J.I.F.; de Mascarenhas Gaivão, I.O.; Ivanushko, Y.G.; Türkmenoğlu, M.; Yagodynetś, P.I.
This study evaluates the possibility of electroanalytical detection of clethodim and fenoxaprop-p-ethyl in soybean crops and products. The electrochemical analysis may be performed at both the cathode and the anode, given the presence of donor and acceptor functional groups. Two mathematical models, each for the positive or negative polarity of the working electrode, were developed and analyzed using linear stability theory and bifurcation analysis. Either way, the electroanalytical behavior is effective and sufficient to quantify the nanomolar concentrations of both pesticides in mildly acidic and neutral medium for cathodic process and neutral to moderately alkaline in anodic. However, considering the moderately acidic environment of the soybean plant and its products, like also the electrochemical properties of both of the pesticide, the cathodic process is preferable. © 2025, Universidade Federal de Mato Grosso do Sul, Departamento de Quimica. All rights reserved.
The Theoretical Description for Bromfenac Electrochemical Determination in Tears and Eye Drops on Coo(Oh)
(AMG Transcend Association, 2025) Tkach, V.V.; Morozova, T.V.; de Oliveira, S.C.; Monteiro, M.J.; Ivanushko, Y.G.; Biryuk, I.G.; Khrutba, V.O.
The bromfenac electrochemical determination over cobalt (III) oxyhydroxide-modified electrode has been described theoretically for the first time. Depending on the solution pH, the electroanalytical process will be carried out differently. It is hydrolyzed in a basic medium, correspondent to tears, thereby oxidized by electrochemical phenolization, followed by quinone-hydroquinonic mechanism. The correspondent mathematical model confirms that despite the high double electric layer impact of each stage, including the analyte hydrolysis, cobalt (III) oxydroxide may be suitable for the bromfenac electrochemical determination in tears and eye drops. © 2024 by the authors.
The Theoretical Description of Furfural and Lactic Acid Cathodic Determination in Bread and Milk
(AMG Transcend Association, 2023) Tkach, V.V.; Morozova, T.V.; Prymachenko, S.V.; Korniienko, I.M.; Yastremska, L.S.; Kuznetsova, O.O.; Kushnir, M.V.
The process of the electroanalytical cathodic determination of furfural and lactic acid in fermented bread and milk on vanadium oxyhydroxide-modified cathode has been developed and analyzed theoretically. The correspondent mathematical model analysis confirms this process's efficiency for furfural and lactic acid determination in a mildly acidic and neutral medium by a cathodic determination to propyleneglycol and furfuroic alcohol. Considering that both the compounds and their reduction products are less ionized in acidic media, cathodic reduction tends to be more efficient than anodic electrooxidation. © 2023 by the authors.