|
|||||
|
|
Highly Selective and Sensitive Tin(II) Membrane Electrode Based on a New Synthesized Schiff's Base |
|
| Authors: | Morteza Hosseini Hayedeh Bagheri Sadeghi Mohammad Rahimi Masoud Salavati‐Niasari Shiva Dehghan Abkenar Kamal Alizadeh Mohammad Reza Ganjali |
| Affiliation: | 1. Department of Chemistry, Islamic Azad University, Savadkooh Branch & Young Researcher Club, Iran;2. Department of Chemistry, Azad University, Tehran Central Branch, Iran;3. Department of Chemistry, Faculty of Science, University of Kashan, Kashan;4. Department of Chemistry, Lorestan University, Khorram Abad, Iran;5. Center of Excellence in Electrochemistry, Department of Chemistry, University of Tehran, Tehran, Iran |
| Abstract: | Studies on complex formation of tris(3‐(2‐hydroxybenzophenone)propyl)amine (THPA) with a number of metal ions in acetonitrile solution revealed the occurrence of a selective 1 : 1 complexation of the proposed ligand with Sn2+ ion. Consequently, THPA was used as a suitable neutral ionophore for the preparation of a polymeric membrane‐selective electrode. The electrode exhibits a Nernstian behavior with a slope of 29.4±0.3 mV per decade and a detection limit of 2.0×10?7 M. It also showed a good selectivity for Sn2+ ions in comparison with some of group A and B metal ions over a wide concentration range of 5.0×10?7–1.0×10?1 M. Improved selectivity was achieved compared to the best selectivity recently reported by other authors for tin(II). The electrode was successfully applied to the determination of Sn2+ ion in waste water and various canned products. |
| Keywords: | Tin(II) ion Ion‐selective electrode Potentiometry Sensors PVC membrane Tris(3‐(2‐hydroxybenzophenone)propyl)amine (THPA) |