Tricaprylylmethylammonium chloride-enhanced high sensitivity potentiometric sensor for iodide assessment in antiseptic solutions
A high-sensitivity potentiometric iodide sensor was fabricated using tricaprylylmethylammonium chloride (TCMACl) as an ion exchanger incorporated into a PVC matrix. The constructed electrode demonstrated high performance characteristics toward I− ion, with a Nernstian slope of −59.2 ± 0.17 mV/decade...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-07-01
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| Series: | Results in Chemistry |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211715625003534 |
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| Summary: | A high-sensitivity potentiometric iodide sensor was fabricated using tricaprylylmethylammonium chloride (TCMACl) as an ion exchanger incorporated into a PVC matrix. The constructed electrode demonstrated high performance characteristics toward I− ion, with a Nernstian slope of −59.2 ± 0.17 mV/decade, a wide dynamic working range extending from 5 × 10−7 to 5 × 10−2 M, and a low detection limit of 5.0 × 10−7 M. The proposed electrode was characterized by its fast response time of 4 s toward the analyte during calibration and the evaluation of iodide in samples. The surface of the prepared membrane was examined using SEM-EDX analysis, supported by mapping, and the stability of TCMACl in the membrane was studied using a mass loss method. The responsive sensor successfully determined the iodide concentration in antiseptic pharmaceutical drugs, achieving an average recovery of 96 % with a relative standard deviation (RSD) of 1.81 %. Additionally, the constructed sensor was applied as an indicator electrode in the potentiometric titration of AgNO3 against KI solution. |
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| ISSN: | 2211-7156 |