Synthesis and Characterization of N-(2-acetylthiophene) salicylideneimine (ATS) as Ionophore for Polymeric Membrane Ag (I) Selective Electrode | ||||
| Egyptian Journal of Chemistry | ||||
| Article 5, Volume 59, Issue 6, December 2016, Page 1001-1012 PDF (609.37 K) | ||||
| DOI: 10.21608/ejchem.2016.1546 | ||||
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| Abstract | ||||
| A NOVEL silver ion selective membrane electrode which was based on a newly synthesized N-(2-acetylthiophene) salicylicdeneimine (ATS) by the reaction of 2-acetyl thiophene with 2-aminophenol at 60ºC in ethanol by using ultrasound irradiation. ATS was characterized by elemental analyses, FTIR, MS and 1H-NMR.The best performance was obtained for the membrane of composition (ATS): PVC: DOS in the ratio 1:33:66 wt %. The sensor shows a linear potential response for Ag+ over a wide concentration range 6.0 x 10-8 -1.0 x 10-1 M and detection limit 4.36 x10-8 with Nernstian slope (57.93 mV decade-1 of activity) between a wide pH range (3.0-10) and a fast response time of 10s. The selectivity coefficient values were calculated with separate solution method, which indicate good selectivity of Ag+ ion. The sensor has a lifetime of five weeks and could be used as an indicator electrode in the potentiometric titration of Ag+ vs. stander solution of NaCl and in the estimation of Ag+ in photographic solutions and medical X-ray samples. | ||||
| Keywords | ||||
| Poly vinyl chloride (PVC); N-(2-acetylthiophene) salicylideneimine (ATS); Silver selective sensor and Nernstian slope | ||||
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