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Use of 5,10,15,20-tetrakis(p-chlorophenyl)porphyrin as sensor material: potentiometric determination of aluminium(III) ions
Volume 45 Published: 27 June 2022 Article ID 0114
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https://www.ias.ac.in/article/fulltext/boms/045/0114 -
Keywords
Porphyrins ;potentiometry ;sensor ;ionophore ;PVC membrane. -
Abstract
In this study, 5,10,15,20-tetrakis(p-chlorophenyl)porphyrin has been synthesized and used as an ionophore for the preparation of a poly(vinyl chloride) (PVC) membrane sensor for aluminium(III) ions. The optimum composition of the best performing membrane contained ionophore, bis(2-ethylhexyl) adipate, PVC and potassium tetrakis(p-chlorophenyl) borate in the ratio of 4.0:63.0:32.0:1.0 (mg). The prepared PVC membrane morphology has been analysed by scanning electron microscopy. The developed aluminium(III)-selective sensor works in a wide linear concentration range of 1.0 ${\times}$ 10$^{–5}$ to 1.0 ${\times}$ 10$^{–1}$ mol l$^{–1}$ and, the detection limit of this sensor is 2.81 ${\times}$ 10$^{-6}$ mol l$^{–1}$. The sensor displays near-Nernstian slope of 25.0 ± 2.7 mV per decade for Al$^{3+}$ ions. The aluminium(III)-selective sensor has a wide working pH range of 5.0–10.0. The sensor shows good reusability, long-term stability and a fast response time of less than 5 s. Inaddition, the sensor shows good selectivity for Al$^{3+}$ ions over different cations. This aluminium(III)-selective sensor was successfully used as an indicator electrode in the potentiometric titration of Al$^{3+}$ ions with EDTA. The developed sensor was successfully applied to the direct determination of Al$^{3+}$ in different water samples.
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Author Affiliations
- Science and Technology, Application and Research Center, Zonguldak Bu¨lent Ecevit University, 67600 Zonguldak, Turkey
- Department of Chemistry, Faculty of Science and Arts, Tokat Gaziosmanpas¸a University, 60250 Tokat, Turkey
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Dates
- Published
- 27 June 2022
- Manuscript received
- 1 December 2021
- Accepted
- 15 February 2022
- Final version published online
- 27 June 2022
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Volume 46, 2023
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