Electrochemical behavior of fungicide tebuconazole and its voltammetric determination on an oxygen-terminated boron-doped diamond electrode

0567638 - ÚFCH JH 2024 RIV CH eng J - Článek v odborném periodiku
Šelešovská, R. - Sokolová, Romana - Krejčová, K. - Schwarzová-Pecková, K. - Mikysek, T. - Matvieiev, O.
Electrochemical behavior of fungicide tebuconazole and its voltammetric determination on an oxygen-terminated boron-doped diamond electrode.
Journal of Electroanalytical Chemistry. Roč. 930, FEB 2023 (2023), č. článku 117155. ISSN 1572-6657. E-ISSN 1873-2569
Grant CEP: GA ČR(CZ) GA20-01589S
Institucionální podpora: RVO:61388955
Klíčová slova: Tebuconazole * Triazole fungicide * Voltammetry * Boron-doped diamond electrode * IR spectroelectrochemistry
Obor OECD: Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
Impakt faktor: 4.5, rok: 2022
Způsob publikování: Omezený přístup

The first study on electrochemical oxidation of triazole fungicide tebuconazole was performed using an oxygen-terminated boron-doped diamond electrode. The irreversible anodic process occurring at + 1.75 V (vs Ag/AgCl/KCl(sat.)) in 0.1 mol/L HNO3 was studied by cyclic voltammetry, IR spectroelectrochemistry, and density functional theory calculations. The oxidation of tebuconazole leads to the formation of the hydroxylated and dihydroxylated derivatives on the 4-chlorophenyl moiety. Also, the corresponding o-quinone derivative was detected. Further, the anodic signal was used to develop a differential pulse voltammetric method for tebuconazole determination with the following parameters: linear dynamic range from 5.0 × 10−7 to 8.3 × 10−5 mol/L and limit of detection of 1.5 × 10−7 mol/L. The method was successfully applied to the analysis of a commercially available pesticide formulation and model samples of river water after preconcentration of tebuconazole using Amberlite® IRC120 H ion-exchange resin in H+ cycle.
Trvalý link: https://hdl.handle.net/11104/0338868