Separation and Spectrophotometric Determination of Osmium(IV) and Ruthenium(III) withO-methoxyphenyl Thiourea as Chromogenic Legand: Sequential Separation of Osmium(IV), Ruthenium(III), and Platinum(IV)

Kuchekar, Shashikant R.; Shelar, Yogesh S.; Bhor, Rohit J.; Anuse, Mansing A.; Naval, Ramesh M.

doi:10.1080/01496395.2014.983245

Cited by 5 publications

(5 citation statements)

References 25 publications

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“…In our laboratory we have developed extraction and spectrophotometric determination for rhodium(III) [17], ruthenium(III) [18], iridium(III) [19], palladium(II) [20] and osmium(IV) [21] using o-Methylphenyl thiourea (OMPT). In the extension of our work we have developed extraction spectrophotometric determination methods for palladium(II) [22], selenium(IV) [23], osmium(IV) and ruthenium(III) [24] with o-methoxy phenylthiourea (OMePT). The current study reports the analytical applications of o-Methoxy phenylthiourea (OMePT) for spectrophotometric determination of cerium(IV).…”

Section: Pmmentioning

confidence: 99%

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Solvent Extraction and Spectrophotometric Determination of Cerium(IV) by Using o-Methoxy Phenylthiourea as an Analytical Reagent

Kuchekar¹,

Naval²,

Han

2016

SERDJ

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A solvent extraction spectrophotometric determination method was developed for cerium(IV) using o-methoxy phenylthiourea (OMePT) as a selective reagent. A ternary complex was formed after liquid-liquid extraction from 0.05 mol L-1 potassium iodide aqueous media using 2.0×10-4 mol L-1 OMePT in chloroform and is measured spectrophotometrically at 318 nm. The validity of Beer's law was in the concentration range up to 22.5 μg mL-1 , with molar absorptivity and Sandell's sensitivity values of 3.38×10 3 L mol-1 cm-1 and 0.041 μg cm-2 respectively. The stoichiometry of the cerium(IV)-OMePT-iodide complex was determined by the slope ratio method and verified by the mole ratio method. The complex was stable for more than 48 h. The method is free from interferences from large number of cations and anions. The developed method was successfully employed for the determination of cerium(IV) from binary synthetic mixtures, ternary synthetic mixtures, soil, tap water and sea water samples.

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Section: Pmmentioning

confidence: 99%

“…The cerium(IV) content was determined as per the recommended procedure. To remove interference of osmium(IV) it is prior extracted with OMePT [24]. To the mixture of cerium(IV) and osmium(IV) solution, 2 mL of 0.009 mol L -1 OMePT in ethanol was added.…”

Section: Interference Studymentioning

confidence: 99%

Solvent Extraction and Spectrophotometric Determination of Cerium(IV) by Using o-Methoxy Phenylthiourea as an Analytical Reagent

Kuchekar¹,

Naval²,

Han

2016

SERDJ

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“…Despite of good sensitivity and selectivity most of these methods are complicated, time consuming and require expensive chemicals. Therefore, the catalytic kinetic methods (CKMs) employing spectrophotometric monitoring (SPM) under pseudo condition still remain a popular method for achieving ruthenium(III) estimation at trace level [26][27][28][29][30][31][32][33][34][35][36][37][38]. A comparison of known CKMs along with reaction condition, types of sample and dynamic range of detection (DRD) are summarized in Table 1 [28,29,[32][33][34][35][36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Spectrophotometric Determination of Ruthenium Utilizing its Catalytic Activity on Oxidation of Hexacyanoferrate(II) by Periodate Ion in Water Samples

Srivastava¹,

Sharma²,

Prajapati³

et al. 2019

ChChT

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The catalytic effect of ruthenium chloride on the outer sphere electron transfer of hexacyanoferrate(II) by periodate ion in aqueous alkaline medium has been effectively employed to determine ruthenium(III) at micro level. The optimum reaction condition has been established and fixed time procedure is adopted. A linear relationship between changes in absorbance and added Ru(III) concentration has been utilized for the trace level determination of Ru(III). The results reveal that the addition of interfering ions (up to 71 times higher concentration of Ru) does not have significant effect on the catalytic activity of Ru(III) on oxidation of hexacyanoferrate(II) by periodate ion. Polyaminocarboxylates (HEDTA, EDTA and IDA) suppress its catalytic power to maximum, if tolerance limit is more than 14.29 times. Due to the reproducibility, stability and selectivity, this method can also be quantitatively applied in different types of water samples for determination of ruthenium(III) at micro level.

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“…Selective extraction of Ru(III) in the presence of Ir(IV) and Rh(III) (Góralska et al 2007) with Alamine 336 or in the presence of Os(IV) and Pt(IV) with thiourea derivative (Kuchekar et al 2015) was studied. In addition, an analytical application of 4-pyridone derivatives for Ru(III) extraction from large amounts of Pd(II) and Rh(III) was proposed (Druškovic et al 2005).…”

Section: Introductionmentioning

confidence: 99%

“…The main interest in PGM extraction is focused on the separation of Pd(II) and Pt(IV) from HCl solutions (Cieszyńska and Wiśniewski 2010 , 2012 ; Papaiconomou et al 2015 ), while extraction systems for Ru(III) and Rh(III) separation are scarcely described. Selective extraction of Ru(III) in the presence of Ir(IV) and Rh(III) (Góralska et al 2007 ) with Alamine 336 or in the presence of Os(IV) and Pt(IV) with thiourea derivative (Kuchekar et al 2015 ) was studied. In addition, an analytical application of 4-pyridone derivatives for Ru(III) extraction from large amounts of Pd(II) and Rh(III) was proposed (Druškovic et al 2005 ).…”

Section: Introductionmentioning

confidence: 99%

Phosphonium ionic liquids as extractants for recovery of ruthenium(III) from acidic aqueous solutions

et al. 2016

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The aim of this work is to investigate extraction of ruthenium(III) from acidic aqueous solutions with phosphonium ionic liquids such as trihexyl(tetradecyl)phosphonium chloride (Cyphos IL 101), trihexyl(tetradecyl)phosphonium bis(2,4,4-trimethylpentyl)phosphinate (Cyphos IL 104) and tributyl(tetradecyl)phosphonium chloride (Cyphos IL 167) as extractants. The influence of HCl content in the feed solutions on extraction of Ru(III) was investigated. The research was performed for model solutions containing Ru(III) and a mixture of waste solutions containing Ru(III) and Rh(III). In addition, investigation of the type of extractant and its concentration in the organic phase on extraction of Ru(III) was carried out. Co-extraction of protons to the organic phase was determined. To the best of our knowledge, the extraction of Ru(III) with Cyphos IL 167 (tributyl(tetradecyl)phosphonium chloride) as an extractant has not yet been described in the scientific literature.

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Separation and Spectrophotometric Determination of Osmium(IV) and Ruthenium(III) withO-methoxyphenyl Thiourea as Chromogenic Legand: Sequential Separation of Osmium(IV), Ruthenium(III), and Platinum(IV)

Cited by 5 publications

References 25 publications

Solvent Extraction and Spectrophotometric Determination of Cerium(IV) by Using <i>o</i>-Methoxy Phenylthiourea as an Analytical Reagent

Solvent Extraction and Spectrophotometric Determination of Cerium(IV) by Using <i>o</i>-Methoxy Phenylthiourea as an Analytical Reagent

Spectrophotometric Determination of Ruthenium Utilizing its Catalytic Activity on Oxidation of Hexacyanoferrate(II) by Periodate Ion in Water Samples

Phosphonium ionic liquids as extractants for recovery of ruthenium(III) from acidic aqueous solutions

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