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The theoretical description for bromfenac electrochemical determination in tears and eye drops on CoO(OH)
Tkach, V. V.; Morozova, T. V.; Sílvio C. de Oliveira; Maria João Monteiro; Ivanushko, Ya. G.; Biryuk, I. G.; Sykyrytska, T. B.; Jarem R. Garcia; Necdet Karakoyun; Yagodynets, P. I.; Kormosh, Zholt O.; Palamarek, K. V.; Loshenyuk, I. R.; Bagrii, K. L.; José Inácio Ferrão da Paiva Martins; Khmeliar, I. M.; Kushnir, L. O.; Sabadyshyn, R. O.; Lysytsia, D. L.; Sharipova, R. G.; Nasirova, S.; Rakhmatova, M. R.; Jalalova, V. Z.; Palytsia, Yu. V.; Grekova, A. V.; Burdina, Ia. F.; 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 quinonehydroquinonic 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.
