Potentiometric Cross-Sensitive Sensors Based on Perfluorinated Membranes Treated at Different Relative Humidity for Codetermination of Cations and Anions in Alkaline Solutions of Amino Acids
- Authors: Parshina A.V.1, Safronova E.Y.2, Titova T.S.1, Safronov D.V.1, Lysova A.A.1, Bobreshova O.V.1, Yaroslavtsev A.B.2
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Affiliations:
- Department of Analytical Chemistry
- Kurnakov Institute of General and Inorganic Chemistry
- Issue: Vol 53, No 11 (2017)
- Pages: 1294-1299
- Section: Short Communications
- URL: https://journals.rcsi.science/1023-1935/article/view/189138
- DOI: https://doi.org/10.1134/S1023193517110118
- ID: 189138
Cite item
Abstract
The results of studying characteristics of potentiometric DP-sensors (sensors with the Donnan potential as their analytical signal) are presented for alkaline solutions of a sulfur-containing amino acid with perfluorosulfonic cation exchange membranes subjected to thermal treatment and mechanical deformation at different relative humidity. Correlation between the distribution of sensitivity of DP-sensors towards cations and anions and diffusion permeability of membranes was found. A multisensor system including two DP-sensors based on membranes with optimized properties and a glass electrode for codetermination of potassium cations and amino acid anions and zwitterions in solutions at pH >7 are developed.
About the authors
A. V. Parshina
Department of Analytical Chemistry
Email: bobreshova@chem.vsu.ru
Russian Federation, Universitetskaya pl. 1, Voronezh, 394006
E. Yu. Safronova
Kurnakov Institute of General and Inorganic Chemistry
Email: bobreshova@chem.vsu.ru
Russian Federation, Leninskii pr. 31, Moscow, 119991
T. S. Titova
Department of Analytical Chemistry
Email: bobreshova@chem.vsu.ru
Russian Federation, Universitetskaya pl. 1, Voronezh, 394006
D. V. Safronov
Department of Analytical Chemistry
Email: bobreshova@chem.vsu.ru
Russian Federation, Universitetskaya pl. 1, Voronezh, 394006
A. A. Lysova
Department of Analytical Chemistry
Email: bobreshova@chem.vsu.ru
Russian Federation, Universitetskaya pl. 1, Voronezh, 394006
O. V. Bobreshova
Department of Analytical Chemistry
Author for correspondence.
Email: bobreshova@chem.vsu.ru
Russian Federation, Universitetskaya pl. 1, Voronezh, 394006
A. B. Yaroslavtsev
Kurnakov Institute of General and Inorganic Chemistry
Email: bobreshova@chem.vsu.ru
Russian Federation, Leninskii pr. 31, Moscow, 119991