Перегляд за Автор "Kormosh, Zholt"

Зараз показуємо 1 - 2 з 2

The theoretical description for CoO(OH)-assisted salicylic acid derivatives determination in beer
(2023) Tkach, Volodymyr; Morozova, Tetiana; Kushnir, Marta; Prymachenko, Serhii; Oliveira, Sílvio C.; Yuzkova, Valentyna; Nazymok, Yevgeniya; Banul, Bohdana; Honchar, Tetiana; Garcia, Jarem; Nikitchenko, Liliya; Yagodynets, Petro; Kormosh, Zholt; Palamarek, Karina; Chychun, Valentyna; Bagrii, Konon; Paiva Martins, Jose Inacio Ferrao; Khmeliar, Inesa; Kushnir, Lesya; Sabadyshyn, Rostyslav; Lysytsia, Dmytro; Sharipova, Riboba; Musayeva, Dilfuza; Lavrik, Ruslan; Moroz, Valerii; Hrabovska, Olena; Tkachenko, Lyubov; Khargeliia (Karputina), Daria; Karputina, Margarita; Grekova, Alla; Burdinina, Yanina
In this work, the possibility of the electrochemical determination of salicylic acid on conducting polymer – CoO(OH) composite has been evaluated. The electrooxidation mechanism includes the gradual phenolization of the aromatic ring carbon atoms 3 and(or) 5 with further electrooxidation to the correspondent quinone. The analysis of the correspondent mathematical model utilizing linear stability theory and bifurcation analysis confirms the conducting polymer composite efficiency in salicylic acid determination in a wide concentration range. On the other hand, the oscillatory behavior in this system is possible, but its realization and feature strongly depend on the analyte nature and background electrolyte composition.
Theoretical description of sotolone electrochemical determination in wine in basic media over an undoped conducting polymer
(2023) Tkach, Volodymyr; Kushnir, Marta; Kopiika, Vira; Luganska, Olga; Omelyanchyk, Lyudmyla; Kormosh, Zholt; Kucher, Mykhailo; Garcia, Jarem; Palamarek, Karina; Bagrii, Konon; Medvedeva, Anzhelika; Oliveira, Sílvio C.; Yagodynets, Petro; Niyazov, Laziz; Musayeva, Dilfuza; Samadov, Bakhodirjon; Payentko, Viktoriia; Demianenko, Eugeny; Paiva Martins, Jose Inacio Ferrao; Vaz dos Reis, Lucinda; Karputina, Margarita; Khargeliia (Karputina), Daria; Nazymok, Yevgeniya; Ivanushko, Yana; Palytsia, Yulia
The electrochemical determination of sotolone in basic media over an undoped conducting polymer has been described for the first time. The alkaline hydrolysis, breaking the furanonic ring, leads to the appearance of an acid ion, entering the polymer matrix as a dopant. The stability analysis of the system, made by the development and investigation of the correspondent mathematical model, shows that the sotolon electrochemical determination is made efficiently. As for the oscillatory behavior, it may also be caused by the cyclic effect of chemical and electrochemical stages on the double electric layer capacitance and impedance.