Abstract
Aim: A novel all solid-state contact PVC-membrane beryllium-selective electrode based on 4-hydroxybenzo-15-crown-5 ether as an ionophore is described.
Results: The best performance was obtained with a membrane composition of 4% ionophore, 67% dioctyl sebacate (DOS), 28% poly(vinyl chloride) (PVC), and 1% potassium tetrakis (p-chloro)phenylborate (KTClPB) (w/w). The all solid-state contact PVCmembrane beryllium-selective electrode together with an Ag/AgCl reference electrode exhibited sub-Nernstian response with a slope of 22±1 mV/decade to beryllium ions from 1.0x10-6 to 1.0x10-1 M, and resulted a considerably low detection limit of 6.2x10 7. The electrode had a good performance in selectivity over a wide range of interfering cations tested. It showed a working pH range between 4.0-8.2 with fast response time (<10 s) and a good reproducibility.
Conclusion: The all solid-state contact PVC-membrane beryllium-selective electrode developed was successfully applied in potentiometric titration of Be2+ ions with EDTA.
Keywords: Beryllium-selective electrode, 4-hydroxybenzo-15-crown-5 ether, potentiometry, PVC membrane, ionophore, EDTA.
Current Analytical Chemistry
Title:A Novel all Solid-State Contact PVC-Membrane Beryllium-Selective Electrode Based on 4-Hydroxybenzo-15-Crown-5 Ether Ionophore
Volume: 14 Issue: 1
Author(s): Ibrahim Isildak*, Azade Attar, Ersin Demir, Baris Kemer and Hassan Y. Aboul-Enein*
Affiliation:
- Yildiz Technical University, Faculty Chemistry & Metallurgical Engineering, Department of Bioengineering, Davutpasa Campus, 34210 Istanbul,Turkey
- Pharmaceutical and Medicinal Chemistry Department, Pharmaceutical and Drug Industries Research Division, National Research Centre, Dokki, Giza 12622,Egypt
Keywords: Beryllium-selective electrode, 4-hydroxybenzo-15-crown-5 ether, potentiometry, PVC membrane, ionophore, EDTA.
Abstract: Aim: A novel all solid-state contact PVC-membrane beryllium-selective electrode based on 4-hydroxybenzo-15-crown-5 ether as an ionophore is described.
Results: The best performance was obtained with a membrane composition of 4% ionophore, 67% dioctyl sebacate (DOS), 28% poly(vinyl chloride) (PVC), and 1% potassium tetrakis (p-chloro)phenylborate (KTClPB) (w/w). The all solid-state contact PVCmembrane beryllium-selective electrode together with an Ag/AgCl reference electrode exhibited sub-Nernstian response with a slope of 22±1 mV/decade to beryllium ions from 1.0x10-6 to 1.0x10-1 M, and resulted a considerably low detection limit of 6.2x10 7. The electrode had a good performance in selectivity over a wide range of interfering cations tested. It showed a working pH range between 4.0-8.2 with fast response time (<10 s) and a good reproducibility.
Conclusion: The all solid-state contact PVC-membrane beryllium-selective electrode developed was successfully applied in potentiometric titration of Be2+ ions with EDTA.
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Cite this article as:
Isildak Ibrahim*, Attar Azade, Demir Ersin, Kemer Baris and Aboul-Enein Y. Hassan*, A Novel all Solid-State Contact PVC-Membrane Beryllium-Selective Electrode Based on 4-Hydroxybenzo-15-Crown-5 Ether Ionophore, Current Analytical Chemistry 2018; 14 (1) . https://dx.doi.org/10.2174/1573411012666161014164546
DOI https://dx.doi.org/10.2174/1573411012666161014164546 |
Print ISSN 1573-4110 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-6727 |
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