Potentiometric study of reaction between periodate and iodide as their tetrabutylammonium salts in chloroform. Application to the determination of iodide and potentiometric detection of end points in acid-base titrations in chloroform

Pournaghi-Azar, M.H.; Farhadi, Khalil

doi:10.1016/0039-9140(95)01406-2

Cited by 7 publications

(3 citation statements)

References 5 publications

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“…A similar method of determination using potentiometry titration was the target of the following report; I − /I 2 redox couple potential was measured with Pt-wire indicator electrode and suitable reference electrode immersed in CHCl 3 medium, to obtain the titration curve of tetrabutyl ammonium iodide (TBI) titrand with titrant standard solution of tetrabutyl ammonium periodate (TBAPI) in CHCl 3 . The same electrochemical cell system is useful for acidimetric titration with strong acids and TBAI/TBAPI redox couple as the indicator for the titration end-point, since the oxidation reaction of the redox system takes place in strongly acidic environment [25].…”

Section: Potentiometry Titration Methodsmentioning

confidence: 99%

Periodate oxidation and its contribution to instrumental methods of micro-analysis—A review

Vlessidis

Evmiridis

2009

Analytica Chimica Acta

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Section: Potentiometry Titration Methodsmentioning

confidence: 99%

Periodate oxidation and its contribution to instrumental methods of micro-analysis—A review

Vlessidis

Evmiridis

2009

Analytica Chimica Acta

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“…The resulting brown KCtriiodide ion-pair precipitate was separated by filtration, washed thoroughly with demineralized water and dried at 40 8C. The composition of the formed ion-pair was confirmed by the potentiometric titration of I À 3 with tetrabutylammonium periodate (TBAP) in chloroform [19] and also by determination of total iodide ion produced after the decomposition of ion-pair using the alkaline fusion method as well as UV-vis, 1 H-NMR and IR spectroscopy.…”

Section: Preparation Of Ion-exchanger (Kch 2 )(I 3 )mentioning

confidence: 99%

Triiodide Ion-Selective Polymeric Membrane Electrode Based on a Ketoconazole-Triiodide Ion Pair

2002

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A new triiodide ion‐selective PVC membrane sensor based on diprotonated ketoconazole‐triiodide, as (KCH2)(I3)2, ion pair, was proposed. The electrode has a linear dynamic range between 2.0×10−3 and 7.0×10−6 M with a Nernstian slope of −59.9±1.6 mV per decade and a detection limit of 3.0×10−6 M. The potentiometric response is independent of the pH of the solution in the pH range 2–8.5. The electrode can be used for at least 3 months without any considerable divergence in potential. It was applied as indicator electrode in potentiometric titration of ascorbic acid, hydroquinone from pharmaceutical preparations and triiodide ions in solution. The proposed triiodide membrane sensor was also used in development of a new, simple, fast, inexpensive and precise method for the determination of Ketoconazole in formulations.

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“…So far, many methods have been developed for its determination, such as electrochemistry, 1 fluorescence, 2 chemiluminescence, 3 spectrophotometry, [4][5][6] and titrimetry. [7][8][9] A luminol-potassium ferricyanide-perphenazine CL reaction that shows high sensitivity for the determination of perphenazine was found. The perphenazine MIP, which has a specific recognition ability to perphenazine, was synthesized.…”

Section: Introductionmentioning

confidence: 99%

Chemiluminescence Sensor for the Determination of Perphenazine Based on a Molecular Imprinted Polymer

Niu

Nie

2006

ANAL. SCI.

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Experimental ApparatusThe schematic diagram of the sensor used in this work is shown in Fig. 1. The reagent solutions and sample solutions were delivered with two peristaltic pumps. PTFE tubes (0.8 mm i.d.) were used to connect all components in the flow system. CL measurements were performed using an IFFL-D CL analyzer (Xi'an Remax Electronic High-Tech Ltd., China). A luminol-potassium ferricyanide-perphenazine CL reaction with high sensitivity for the determination of perphenazine was found. A perphenazine molecular imprinted polymer (MIP) was synthesized. Using the perphenazine MIP as a recognition material, a novel molecular imprinting-chemiluminescence (MI-CL) sensor for the determination of perphenazine was made based on the luminol-potassium ferricyanide-perphenazine CL reaction. The sensor displayed good selectivity and high sensitivity. The linear-response range of the sensor was 5.0 × 10 -8 -1.0 × 10 -5 g/ml with a linear correlation coefficient of 0.9961. The detection limit was 2 × 10 -8 g/ml perphenazine and the relative standard deviation for 1.0 × 10 -6 g/ml perphenazine solution was 3.7% (n = 11). The sensor was applied to the determination of perphenazine in urine samples with satisfactory results.

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Potentiometric study of reaction between periodate and iodide as their tetrabutylammonium salts in chloroform. Application to the determination of iodide and potentiometric detection of end points in acid-base titrations in chloroform

Cited by 7 publications

References 5 publications

Periodate oxidation and its contribution to instrumental methods of micro-analysis—A review

Periodate oxidation and its contribution to instrumental methods of micro-analysis—A review

Triiodide Ion-Selective Polymeric Membrane Electrode Based on a Ketoconazole-Triiodide Ion Pair

Chemiluminescence Sensor for the Determination of Perphenazine Based on a Molecular Imprinted Polymer

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