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Liquid membrane potentiometric sensor for determination of Fe 3+ ion

Solution studies showed a selective interaction between the new synthesized ionophore, 2-[(thiophen-2-yl)methyleneamino]isoindoline-1,3-dione ( TMID ) and Fe(III) ion. Therefore, TMID was used as an iron selective ion-carrier in a plasticized liquid membrane sensor. The linear response range of the... Full description

Journal Title: Journal of Analytical Chemistry 2014, Vol.69(11), pp.1073-1078
Main Author: Zamani, Hassan
Other Authors: Faridbod, Farnoush
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 1061-9348 ; E-ISSN: 1608-3199 ; DOI: 10.1134/S1061934814110069
Link: http://dx.doi.org/10.1134/S1061934814110069
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recordid: springer_jour10.1134/S1061934814110069
title: Liquid membrane potentiometric sensor for determination of Fe 3+ ion
format: Article
creator:
  • Zamani, Hassan
  • Faridbod, Farnoush
subjects:
  • potentiometry
  • PVC membrane
  • sensor
  • ion-selective electrode
ispartof: Journal of Analytical Chemistry, 2014, Vol.69(11), pp.1073-1078
description: Solution studies showed a selective interaction between the new synthesized ionophore, 2-[(thiophen-2-yl)methyleneamino]isoindoline-1,3-dione ( TMID ) and Fe(III) ion. Therefore, TMID was used as an iron selective ion-carrier in a plasticized liquid membrane sensor. The linear response range of the proposed electrode was 1.0 × 10 −6 –1.0 × 10 −2 M. The Nernstian slope of 20.1 ± 0.3 mV/decade, and a detection limit of 5 × 10 −7 M was obtained. The sensor could be used in the pH range of 2.3–4.8, and the response time was about 10 s. The lifetime of the electrode was at least 7 weeks. The sensor accuracy was investigated in two ways: (i) with the potentiometric titration of a Fe 3+ solution with EDTA and (ii) with Fe(III) monitoring in some cationic mixtures. Finally, the newly fabricated electrode was effectively applied as an indicator electrode for the direct Fe 3+ determination in real samples.
language: eng
source:
identifier: ISSN: 1061-9348 ; E-ISSN: 1608-3199 ; DOI: 10.1134/S1061934814110069
fulltext: fulltext
issn:
  • 1608-3199
  • 16083199
  • 1061-9348
  • 10619348
url: Link


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titleLiquid membrane potentiometric sensor for determination of Fe 3+ ion
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subjectpotentiometry ; PVC membrane ; sensor ; ion-selective electrode
descriptionSolution studies showed a selective interaction between the new synthesized ionophore, 2-[(thiophen-2-yl)methyleneamino]isoindoline-1,3-dione ( TMID ) and Fe(III) ion. Therefore, TMID was used as an iron selective ion-carrier in a plasticized liquid membrane sensor. The linear response range of the proposed electrode was 1.0 × 10 −6 –1.0 × 10 −2 M. The Nernstian slope of 20.1 ± 0.3 mV/decade, and a detection limit of 5 × 10 −7 M was obtained. The sensor could be used in the pH range of 2.3–4.8, and the response time was about 10 s. The lifetime of the electrode was at least 7 weeks. The sensor accuracy was investigated in two ways: (i) with the potentiometric titration of a Fe 3+ solution with EDTA and (ii) with Fe(III) monitoring in some cationic mixtures. Finally, the newly fabricated electrode was effectively applied as an indicator electrode for the direct Fe 3+ determination in real samples.
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descriptionSolution studies showed a selective interaction between the new synthesized ionophore, 2-[(thiophen-2-yl)methyleneamino]isoindoline-1,3-dione ( TMID ) and Fe(III) ion. Therefore, TMID was used as an iron selective ion-carrier in a plasticized liquid membrane sensor. The linear response range of the proposed electrode was 1.0 × 10 −6 –1.0 × 10 −2 M. The Nernstian slope of 20.1 ± 0.3 mV/decade, and a detection limit of 5 × 10 −7 M was obtained. The sensor could be used in the pH range of 2.3–4.8, and the response time was about 10 s. The lifetime of the electrode was at least 7 weeks. The sensor accuracy was investigated in two ways: (i) with the potentiometric titration of a Fe 3+ solution with EDTA and (ii) with Fe(III) monitoring in some cationic mixtures. Finally, the newly fabricated electrode was effectively applied as an indicator electrode for the direct Fe 3+ determination in real samples.
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abstractSolution studies showed a selective interaction between the new synthesized ionophore, 2-[(thiophen-2-yl)methyleneamino]isoindoline-1,3-dione ( TMID ) and Fe(III) ion. Therefore, TMID was used as an iron selective ion-carrier in a plasticized liquid membrane sensor. The linear response range of the proposed electrode was 1.0 × 10 −6 –1.0 × 10 −2 M. The Nernstian slope of 20.1 ± 0.3 mV/decade, and a detection limit of 5 × 10 −7 M was obtained. The sensor could be used in the pH range of 2.3–4.8, and the response time was about 10 s. The lifetime of the electrode was at least 7 weeks. The sensor accuracy was investigated in two ways: (i) with the potentiometric titration of a Fe 3+ solution with EDTA and (ii) with Fe(III) monitoring in some cationic mixtures. Finally, the newly fabricated electrode was effectively applied as an indicator electrode for the direct Fe 3+ determination in real samples.
copMoscow
pubPleiades Publishing
doi10.1134/S1061934814110069
pages1073-1078
date2014-11