Ionophore Properties of Schiff Base Compounds as Ion Sensing Molecules for Fabricating Cu(II) Ion-Selective Electrodes
- Authors: Hasani B.1, Zamani A.2, Moftakhar M.K.1, Mostafavi M.1, Yaftian M.R.1, Ghorbanloo M.1
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Affiliations:
- Phae Equilibria Research Laboratory, Department of Chemistry, Faculty of Science
- Department of Environmental Science, Faculty of Science
- Issue: Vol 73, No 1 (2018)
- Pages: 82-90
- Section: Articles
- URL: https://journals.rcsi.science/1061-9348/article/view/182959
- DOI: https://doi.org/10.1134/S1061934818010021
- ID: 182959
Cite item
Abstract
Bis(2-hydroxybenzaldehyde)-1,2-diaminoethane (LI), bis(2-hydroxybenzaldehyde)-1,3-diaminopropane (LII) and bis(2-hydroxybenzaldehyde)-4,4'-methylendianiline (LIII) were examined as ionophores for fabrication of polyvinylchloride (PVC) membrane Cu(II) ion-selective potentiometric sensors. The optimum composition (%) for the sensors was: 5 LI, 30 PVC, 6 sodium tetraphenylborate (NaTPB), 59 ortho-nitrophenyloctyl ether (NPOE); 4 LII, 30 PVC, 5 NaTPB, 61 dibutyl phthalate; 6 LIII, 30 PVC, 5 NaTPB, 59 NPOE. The linear response range of the electrodes was 5 × 10–4–0.05 (LI), 5 × 10–4–0.1 (LII) and 1 × 10–6–0.01 M (LIII), and the corresponding detection limits were 4 × 10–4, 4 × 10–4 and 2 × 10–7 M, respectively. The sensors were showed rapid response time (≈10 s). Their responses were independent on pH in the range 2.5–5.0 (LI), 3.2–4.7 (LII) and 4.0–5.0 (LIII). The selectivity of the prepared electrodes towards copper ions over some mono-, di- and trivalent metal ions was evaluated. The sensors were used as indicator electrode in potentiometric titration of copper ions in aqueous solutions.
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About the authors
Bahram Hasani
Phae Equilibria Research Laboratory, Department of Chemistry, Faculty of Science
Email: yaftian@znu.ac.ir
Iran, Islamic Republic of, Zanjan, 45371-38791
Abbasali Zamani
Department of Environmental Science, Faculty of Science
Email: yaftian@znu.ac.ir
Iran, Islamic Republic of, Zanjan, 45371-38791
Mahdieh Koorepazan Moftakhar
Phae Equilibria Research Laboratory, Department of Chemistry, Faculty of Science
Email: yaftian@znu.ac.ir
Iran, Islamic Republic of, Zanjan, 45371-38791
Maryam Mostafavi
Phae Equilibria Research Laboratory, Department of Chemistry, Faculty of Science
Email: yaftian@znu.ac.ir
Iran, Islamic Republic of, Zanjan, 45371-38791
Mohammad Reza Yaftian
Phae Equilibria Research Laboratory, Department of Chemistry, Faculty of Science
Author for correspondence.
Email: yaftian@znu.ac.ir
Iran, Islamic Republic of, Zanjan, 45371-38791
Massomeh Ghorbanloo
Phae Equilibria Research Laboratory, Department of Chemistry, Faculty of Science
Email: yaftian@znu.ac.ir
Iran, Islamic Republic of, Zanjan, 45371-38791