Effect of the Nature of a Quaternary Ammonium Salt and the Addition of a Neutral Carrier on Analytical Characteristics of Sulfate-Selective Electrodes
- 作者: Matveichuk Y.1, Rakhman’ko E.1, Okaev E.1
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隶属关系:
- Faculty of Chemistry
- 期: 卷 73, 编号 4 (2018)
- 页面: 374-382
- 栏目: Articles
- URL: https://journals.rcsi.science/1061-9348/article/view/183005
- DOI: https://doi.org/10.1134/S1061934818040081
- ID: 183005
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详细
A film polyvinyl chloride sulfate-selective electrode based on the sterically accessible higher quaternary ammonium salt, 3,4,5-tris(dodecyloxy)benzyl(oxyethyl)3trimethylammonium chloride, using 1-bromonapthalene as a plasticizer and heptyl p-trifluoroacetylbenzoate as a solvating agent was developed. The limit of detection of the electrode was 6.7 × 10−7 M, lifetime was 1 month, and the slope of the electrode function was 27 mV/decade. The electrode is selective in the presence of interfering Cl−, C2O4−, Br−, and NO3−ions. The interference of carbonate ions was eliminated by maintaining pH at 3.2 ± 0.1. Based on IR spectroscopic and potentiometric studies, it is most likely that the solvation of sulfate ions with heptyl p-trifluoroacetylbenzoate occurs through interaction with the trifluoroacetyl carbonyl carbon atom rather than with hydroxyl groups of the hydrate form.
作者简介
Yu. Matveichuk
Faculty of Chemistry
编辑信件的主要联系方式.
Email: Yu_Matveychuk@mail.ru
白俄罗斯, Minsk, 220030
E. Rakhman’ko
Faculty of Chemistry
Email: Yu_Matveychuk@mail.ru
白俄罗斯, Minsk, 220030
E. Okaev
Faculty of Chemistry
Email: Yu_Matveychuk@mail.ru
白俄罗斯, Minsk, 220030
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