Thallium(Ⅰ)-Selective Membrane Potentiometric Sensor Based on Dibenzyldiaza-18-Crown-6

doi:10.5012/bkcs.2003.24.4.421

Cited by 41 publications

(1 citation statement)

References 28 publications

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“…It has been concluded that sensors of membranes of L 1 , L 2 and L 3 without plasticizer and containing only PVC showed linear response over a working concentration range of 1.7 × 10 −5 -1.0 × 10 −1 , 5.5 × 10 −6 -1.0 × 10 −1 and 1.1 × 10 −5 -1.0 × 10 −1 mol L −1 , with a slope of 24.9 ± 0.3, 25.7 ± 0.2 and 23.5 ± 0.3 mV decade −1 of activity, respectively. Since the nature of plasticizer influences the performance of membrane feasibility, 38,39 it is expected to play an important role in determining the ion selective characteristics. Therefore, effect of several plasticizers viz., o-NPOE, BA, 1-CN, DBP and DOP were studied and response obtained with plasticized membranes are summarized in Tables I-III.…”

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confidence: 99%

Quantification of Zn²⁺Ion in Environmental Samples by Fabrication of Pyrolytic Graphite Electrode Based on Schiff Bases of Hydrazinecarbothioamide Derivatives

Sahani¹,

Singh²,

Jain³

2017

J. Electrochem. Soc.

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Schiff base ligands 2,2 -(((ethane-1,2-diylbis(oxy))bis(2,1-phenylene))bis(methanylylidene))bis(hydrazinecarbothioamide) (L 1 ), 2,2 -(((propane-1,3-diylbis(oxy))bis(2,1-phenylene))bis(methanylylidene))bis(hydrazinecarbothioamide) (L 2 ) and 2,2 -((((oxybis(ethane-2,1-diyl))bis(oxy))bis(2,1-phenylene))bis(methanylylidene))bis(hydrazinecarbothioamide) (L 3 ) have been synthesized and were explored as ion carrier in the construction of solid contact Zn 2+ PVC based membrane sensor. The effect of plasticizers, benzylacetate (BA), dioctylphthalate (DOP), dibutylphthalate (DBP), 1-chloronaphthlene (1-CN) and o-nitrophenyloctylether (o-NPOE) and anion excluders, sodium tetraphenylborate (NaTPB) and potassium tetrakis-p-(chlorophenyl)borate (KTpClPB) on the performance of the electrodes has also been investigated. Comparative studies performed on coated graphite electrode (CGE) and coated pyrolytic graphite electrode (CPGE) reveal the superiority of CPGE with optimized membrane composition of L 2 : PVC: DOP: NaTBP≡6:34:58:2 (w/w, mg) exhibits the best results with a wide working concentration range of 1.1 × 10 −8 -1.0 × 10 −1 mol L −1 , detection limit of 8.0 × 10 −9 mol L −1 , Nernstian slope of 29.6 ± 0.2 mV decade −1 of activity of Zn 2+ ion in the pH range of 3.0-9.0. The sensor showed fast response time of 10 s and could be used over a period of 4 months without any significant divergence in slope, working concentration range and detection limit. The sensor was employed in the quantification of Zn 2+ ion in various samples and also as an indicator electrode in the potentiometric titration of Zn 2+ ion with EDTA.

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Section: Resultsmentioning

confidence: 99%

Quantification of Zn²⁺Ion in Environmental Samples by Fabrication of Pyrolytic Graphite Electrode Based on Schiff Bases of Hydrazinecarbothioamide Derivatives

Sahani¹,

Singh²,

Jain³

2017

J. Electrochem. Soc.

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Novel Thallium(III) Solid‐Contact Ion‐Selective Electrode with Electropolymerized Transducer

Харитонов

Zarembo

2006

Electroanalysis

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A solid-contact ion-selective electrode for thallium(III) based on its complex with new complexone N,N'-) into a polymeric membrane is described. The ion-to-electron transducer used as the solid contact electrode was polyaniline which was electrochemically polymerized on a Pt wire. The plasticized poly(vinyl chloride) membrane incorporate ion-associate of [Tl(DOEDDSA)] À with N,N,N-trihexadecyl-N-methylammonium cation as electroactive material for ionometric sensor controls. The best performance in terms of slope (56 AE 2 mV per decade) and response time (15 s) is displayed. The sensor shows a Nernstian response for [Tl(DOEDDSA)]À ions over a wide concentration range of 6.4 Â 10 À7 to 10 À2 M, with a detection limit of thallium complexonate 8.2 Â 10 À8 M. The sensor can be used for more than three months without any considerable divergence in potentials. The selectivity is also good towards the most common univalent and divalent anions and the signal is constant in the pH range 4.7 -9.0. An application to thallium determination in a mineral sample proved to be a success, and it was employed as an indicator electrode in direct potentiometry.

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Electroanalytical Studies on Cobalt(II) Ion‐Selective Sensor of Polymeric Membrane Electrode and Coated Graphite Electrode Based on N₂O₂ Salen Ligands

et al. 2011

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Poly(vinyl chloride)-based membranes of salen ligands, 2-((E)-((1R,2S)-2-((E)-5-tert-butyl-2-hydroxybenzylideneamino)cyclohexylimino)methyl)-4-tert-butyl phenol (S 1 ) and 2-((E)-((1R,2S)-2-((E)-3,5-di-tert-butyl-2-hydroxybenzylideneamino)cyclohexylimino)methyl)-4,6-di-tert-butylphenol (S 2 ) were fabricated and explored as cobalt(II) selective electrodes. The performance of the polymeric membrane electrode (PME) and coated graphite electrode (CGE) were compared and it was observed that CGE showed a wide working concentration range of 1.1 10 À8 to 1.0 10 À1 mol L À1 with a limit of detection of 7.0 10 À9 mol L À1 exhibiting the Nernstian slope 29.6 mV/decade of activity in the pH range 3.0-9.0. It was used for the determination of cobalt(II) ions in water, soil, beer, pharmaceutical samples and medicinal plants and would be used as an indicator electrode in potentiometric titration with EDTA.

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Thallium(Ⅰ)-Selective Membrane Potentiometric Sensor Based on Dibenzyldiaza-18-Crown-6

Cited by 41 publications

References 28 publications

Quantification of Zn²⁺Ion in Environmental Samples by Fabrication of Pyrolytic Graphite Electrode Based on Schiff Bases of Hydrazinecarbothioamide Derivatives

Quantification of Zn²⁺Ion in Environmental Samples by Fabrication of Pyrolytic Graphite Electrode Based on Schiff Bases of Hydrazinecarbothioamide Derivatives

Novel Thallium(III) Solid‐Contact Ion‐Selective Electrode with Electropolymerized Transducer

Electroanalytical Studies on Cobalt(II) Ion‐Selective Sensor of Polymeric Membrane Electrode and Coated Graphite Electrode Based on N₂O₂ Salen Ligands

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Thallium(Ⅰ)-Selective Membrane Potentiometric Sensor Based on Dibenzyldiaza-18-Crown-6

Cited by 41 publications

References 28 publications

Quantification of Zn2+Ion in Environmental Samples by Fabrication of Pyrolytic Graphite Electrode Based on Schiff Bases of Hydrazinecarbothioamide Derivatives

Quantification of Zn2+Ion in Environmental Samples by Fabrication of Pyrolytic Graphite Electrode Based on Schiff Bases of Hydrazinecarbothioamide Derivatives

Novel Thallium(III) Solid‐Contact Ion‐Selective Electrode with Electropolymerized Transducer

Electroanalytical Studies on Cobalt(II) Ion‐Selective Sensor of Polymeric Membrane Electrode and Coated Graphite Electrode Based on N2O2 Salen Ligands

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Quantification of Zn²⁺Ion in Environmental Samples by Fabrication of Pyrolytic Graphite Electrode Based on Schiff Bases of Hydrazinecarbothioamide Derivatives

Quantification of Zn²⁺Ion in Environmental Samples by Fabrication of Pyrolytic Graphite Electrode Based on Schiff Bases of Hydrazinecarbothioamide Derivatives

Electroanalytical Studies on Cobalt(II) Ion‐Selective Sensor of Polymeric Membrane Electrode and Coated Graphite Electrode Based on N₂O₂ Salen Ligands