Extraction spectrophotometric determination of rhodium(III) with o-methylphenyl thiourea

Shelar, Yogesh S.; Kuchekar, Shashikant R.; Han, Sung-H

doi:10.1016/j.jscs.2012.04.013

Cited by 8 publications

(6 citation statements)

References 13 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).…”

Section: Pmmentioning

confidence: 99%

Solvent Extraction and Spectrophotometric Determination of Cerium(IV) by Using <i>o</i>-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%

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

Kuchekar¹,

Naval²,

Han

2016

SERDJ

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“…PGE compounds, which are potent respiratory allergens, can cause many diseases such as conjunctivitis, rhinitis, asthma and urticaria [3] . Rhodium (Rh) is a valuable platinum group element found in ores that are naturally found in the environment at trace levels [4,5] . Rh particles have impressive optical properties and electrocatalytic activity.…”

Section: Introductionmentioning

confidence: 99%

“…Numerous analytical methods/strategies are used for the determination of rhodium in different matrices and these include flame atomic absorption spectrometry (FAAS), [12] inductively coupled plasma atomic emission spectroscopy (ICP‐AES), [13] inductively coupled plasma mass spectrometry (ICP‐MS), [14] electro‐thermal atomic absorption spectrometry (ET‐AAS), [5,15] UV‐visible spectrophotometer (UV‐VIS), [16] thermal lens spectrometry (TLC), [17] resonance light‐scattering (RLS), [18] and high performance liquid chromatography (HPLC) [19] . Despite the low sensitivity of FAAS, it provides rapid analysis in addition to other advantages such simplicity and low operational cost compared to the other methods [20] .…”

Section: Introductionmentioning

confidence: 99%

A Simple and Effective Quantification of Water‐Soluble Rhodium in Soil Samples by Magnetic‐Colloidal‐Gel‐Assisted Dispersive Solid Phase Extraction

et al. 2023

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In this study, a simple, sensitive and environmentally friendly method was developed for the determination of water-soluble rhodium in soil samples. For this purpose, rhodium was preconcentrated/separated by a dispersive solid phase extraction method (dSPE) and determined by an atomic absorption spectrophotometer with flame atomizer, equipped with a slotted quartz tube (SQT-FAAS). In the dSPE method, a magnetic colloidal gel (magnetic nanofluid) was produced by mixing Fe 3 O 4 based magnetic nanoparticles (MNP), and deep eutectic solvent (DES) obtained from the mixture of choline chloride and phenol (1 : 3). The optimized system showed good linearity in the concentration range of 17-447 μg/kg. While recording a detection limit (LOD) of 4.26 μg/kg, an over 200fold improvement in the detection power was obtained based on the comparison of LODs of the developed method and FAAS. Applicability and accuracy of the developed method were validated by spike recovery results that fell in the range of 89-106 %, using the matrix matching method to boost quantification accuracy in the soil samples.

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“…Furthermore, the concentration of rhodium in environmental samples is very low, so separation and pre-concentration steps are often needed prior to analysis. Widely used techniques for separation and pre-concentration of trace amounts of rhodium include liquid-liquid extraction [ 15 , 16 ], solid–liquid extraction [ 12 , 17 , 18 ], and techniques based on ion exchange [ 3 , 6 , 19 ]. Cloud point extraction (CPE), which is an alternative to conventional solvent extraction, has been extensively used in analytical chemistry in the last decade [ 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Determination of Ultra-trace Rhodium in Water Samples by Graphite Furnace Atomic Absorption Spectrometry after Cloud Point Extraction Using 2-(5-Iodo-2-Pyridylazo)-5-Dimethylaminoaniline as a Chelating Agent

et al. 2017

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A highly sensitive method based on cloud point extraction (CPE) separation/preconcentration and graphite furnace atomic absorption spectrometry (GFAAS) detection has been developed for the determination of ultra-trace amounts of rhodium in water samples. A new reagent, 2-(5-iodo-2-pyridylazo)-5-dimethylaminoaniline (5-I-PADMA), was used as the chelating agent and the nonionic surfactant TritonX-114 was chosen as extractant. In a HAc-NaAc buffer solution at pH 5.5, Rh(III) reacts with 5-I-PADMA to form a stable chelate by heating in a boiling water bath for 10 min. Subsequently, the chelate is extracted into the surfactant phase and separated from bulk water. The factors affecting CPE were investigated. Under the optimized conditions, the calibration graph was linear in the range of 0.1–6.0 ng/mL, the detection limit was 0.023 ng/mL for rhodium and relative standard deviation was 3.67% (c = 1.0 ng/mL, n = 11)．The method has been applied to the determination of trace rhodium in water samples with satisfactory results

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Extraction spectrophotometric determination of rhodium(III) with o-methylphenyl thiourea

Cited by 8 publications

References 13 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

A Simple and Effective Quantification of Water‐Soluble Rhodium in Soil Samples by Magnetic‐Colloidal‐Gel‐Assisted Dispersive Solid Phase Extraction

Determination of Ultra-trace Rhodium in Water Samples by Graphite Furnace Atomic Absorption Spectrometry after Cloud Point Extraction Using 2-(5-Iodo-2-Pyridylazo)-5-Dimethylaminoaniline as a Chelating Agent

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