Carbonate-Selective Electrodes Based on Higher Quaternary Ammonium Salts with Increased Steric Accessibility of the Exchange Site
- Authors: Matveichuk Y.V.1, Rakhman’ko E.M.1, Okaev E.B.1
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Affiliations:
- Faculty of Chemistry
- Issue: Vol 73, No 7 (2018)
- Pages: 719-727
- Section: Articles
- URL: https://journals.rcsi.science/1061-9348/article/view/183108
- DOI: https://doi.org/10.1134/S1061934818030097
- ID: 183108
Cite item
Abstract
A film polyvinyl chloride (33 wt %) carbonate-selective electrode based on a higher quaternary ammonium salt with increased steric accessibility of the exchange site, 3,4,5-tris(dodecyloxy)benzyl( oxyethyl)3trimethylammonium chloride (5 wt %), was developed using o-nitrophenyl decyl ether (52 wt %) as a plasticizer and heptyl p-trifluoroacetylbenzoate (10 wt %) as a solvating agent. The limit of detection of hydrocarbonate was 1.9 × 10−9 M, lifetime was 2.5 months, and the slope of the electrode function was 32.3 ± 0.6 mV/decade. The electrode is selective in the presence of interfering SO42-, Cl−, C2O42-, Br−, HPO42-, and NO3- ions, which allows its application for the determination of HCO3- ions in mineral water.
About the authors
Yu. V. Matveichuk
Faculty of Chemistry
Author for correspondence.
Email: Yu_Matveychuk@mail.ru
Belarus, Minsk, 220030
E. M. Rakhman’ko
Faculty of Chemistry
Email: Yu_Matveychuk@mail.ru
Belarus, Minsk, 220030
E. B. Okaev
Faculty of Chemistry
Email: Yu_Matveychuk@mail.ru
Belarus, Minsk, 220030