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- Title
Symmetric and Asymmetric Copper Selective Electrodes based on N-(benzothiazol-2-ylcarbamothioyl)benzamide.
- Authors
Fateh, Abbas Nasri; Hajiaghababaei, Leila; Allahgholi Ghasri, Mohammad Reza; Shahvelayati, Ashraf Sadat; Kalateh, Khadijeh
- Abstract
The present work aimed at comparing the capabilities and efficiency of symmetric and asymmetric electrodes for potentiometric detection of Cu2+. Initially, we synthesized N-(benzothiazol-2-ylcarbamothioyl)benzamide, and ¹H-NMR, 13C-NMR, and FT-IR spectroscopy approaches were used for characterization. Subsequently, it was employed as an ionophore to fabricate asymmetric electrodes of coated wire (CWE) and solid-state (SSE) and symmetric electrodes with liquid internal electrolyte (LIE). The best liquid membrane was prepared with an Ionophore: DBP: PVC: NaTPB ratio of 12:56:30:2. All electrodes exhibited Nernstian responses. The detection limits for SSE (1×10-9 mol/L) and CWE (1×10-7 mol/L) were superior to LIE (2×10-6 mol/L). Moreover, all three electrodes demonstrated very short response times (approximately 6 seconds) and exhibited large selectivity coefficient values for different cations. Asymmetric electrodes displayed longer lifetimes (SSE: 13 weeks and CWE: 12 weeks) compared to the symmetric electrode (LIE: 10 weeks). Finally, the electrodes were utilized for potentiometric titration of Cu2+ with ethylenediaminetetraacetic acid.
- Subjects
COPPER electrodes; POTENTIOMETRY; LIQUID membranes; ETHYLENEDIAMINETETRAACETIC acid; BENZAMIDE; DETECTION limit
- Publication
Analytical & Bioanalytical Electrochemistry, 2024, Vol 16, Issue 4, p331
- ISSN
2008-4226
- Publication type
Article
- DOI
10.22034/abec.2024.712921