Tristimulus colorimetric and spectrophotometric study of the state of 4-hydroxystyryl dyes in aqueous solutions
- Autores: Chebotarev A.1, Snigur D.1, Zhukova Y.2, Bevziuk K.1,3, Studenyak Y.2, Bazel Y.2,3
-
Afiliações:
- Mechnikov Odessa National University
- Uzhgorod National University
- Pavol Jozef Šafárik University
- Edição: Volume 87, Nº 2 (2017)
- Páginas: 196-203
- Seção: Article
- URL: https://journals.rcsi.science/1070-3632/article/view/218136
- DOI: https://doi.org/10.1134/S1070363217020074
- ID: 218136
Citar
Resumo
Acid-base properties of 4-hydroxystyryl dyes in aqueous solution have been studied by means of chemical tristimulus colorimetry and spectrophotometry. Ionization and hydroxylation constants of the dyes have been determined using chromaticity functions of specific and CIE color difference. It has been shown that aggregation processes in the solution of 4-hydroxystyryl dyes can be observed by means of tristimulus colorimetry. A scheme of acid-base transformations of the studied dyes in the solution has been suggested, and selected spectrophotometric parameters of the equilibrium ionic and molecular forms have been determined.
Sobre autores
A. Chebotarev
Mechnikov Odessa National University
Autor responsável pela correspondência
Email: alexch@ukr.net
Ucrânia, ul. Dvoryanskaya 2, Odessa, 65082
D. Snigur
Mechnikov Odessa National University
Email: alexch@ukr.net
Ucrânia, ul. Dvoryanskaya 2, Odessa, 65082
Yu. Zhukova
Uzhgorod National University
Email: alexch@ukr.net
Ucrânia, Uzhgorod
K. Bevziuk
Mechnikov Odessa National University; Pavol Jozef Šafárik University
Email: alexch@ukr.net
Ucrânia, ul. Dvoryanskaya 2, Odessa, 65082; Košice
Ya. Studenyak
Uzhgorod National University
Email: alexch@ukr.net
Ucrânia, Uzhgorod
Ya. Bazel
Uzhgorod National University; Pavol Jozef Šafárik University
Email: alexch@ukr.net
Ucrânia, Uzhgorod; Košice