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Iodide selective membrane electrodes based on a Molybdenum–Salen as a neutral carrier

Ghanei-Motlagh, Masoud and Taher, Mohammad Ali and Ahmadi, Kyoumars and Sheikhshoaie, Iran (2011) Iodide selective membrane electrodes based on a Molybdenum–Salen as a neutral carrier. Materials Science and Engineering: C, 31 (8). pp. 1625-1631. ISSN 09284931

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Abstract

Abstract: A new polymeric membrane electrode (PME) and a coated platinum disk electrode (CPtE) based on Schiff base complex of Mo(VI) as a suitable carrier for I(-) ion were described. The influence of membrane composition, pH and possible interfering anions were investigated on the response properties of the electrodes. The electrodes exhibited a Nernstian slope of 63.0 +/- 0.5 (CPtE) and 60.3 +/- 0.4 (PME) mV decade(-1) in I(-) ion over a wide concentration range from 7.9 x 10(-7) to 1.0 x 10(-1) M for CPtE and 9.1 x 10(-6) to 1.0 x 10(-1) M I(-) for PME. The potentiometric response of the electrodes was independent of the pH of the test solution in the pH range 2.0-8.5 with a fast response time (< 10 s). The process of transfer of iodide across the membrane interface was investigated by use of the AC impedance technique. The proposed sensors were successfully applied to direct determination of iodide in samples containing interfering anions, waste water and as indicator electrodes in precipitation titrations. (C) 2011 Elsevier B.V. All rights reserved.

Item Type: Article
Subjects: WA Public Health
WX Hospital and other health Facilities
Divisions: Faculty of Medicine, Health and Life Sciences > School of Medicine
Depositing User: ePrint Admin Admin
Date Deposited: 02 Jul 2013 07:24
Last Modified: 02 Jul 2013 07:24
URI: http://eprints.ajaums.ac.ir/id/eprint/81

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