Extraction and derivative spectrophotometric assay of Sm(III), Pr(III) and Nd(III) from REEs monazite concentrate

Guirguis, L.A.; Orabi, Ahmed H.; Mohamed, Basma T.

doi:10.1080/03067319.2019.1672673

Cited by 7 publications

(3 citation statements)

References 49 publications

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“…Calibration curve for spectrophotometric determination of Lu Fig (7). Calibration curve for spectrophotometric determination of Tb Fig (8). Calibration curve for spectrophotometric determination of Tm…”

Section: Construction Of Calibration Curvesmentioning

confidence: 99%

“…Using phenyl tripheora acetone; Nd, Ho, Er, and Tm were determined using second and third order derivative spectrophotometry.Reviewing recent uses of derivative spectrophotometry and development directions is presented by [6]. Derivative UVspectrophotometry is an analytical technique of enormous implication commonly in obtaining mutually qualitative and quantitative in order from spectra that are of unresolved bands, with respect to qualitative and quantitative analysis, it uses first or higher derivatives of absorbance in accordance with wavelength [7,8]. Derivative spectrophotometry is an analytical technique of great utility for extracting both qualitative and quantitative information from spectra composed of unresolved bands (which are generated from parent zero-order ones), and for Egypt.…”

Section: Introductionmentioning

confidence: 99%

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Derivative Spectrophotometric Determination of Lu, Tb and Tm Using Fluorescein Dye

Abd Al Aziz

2024

Egypt. J. Chem.

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The most straightforward technique to boost selectivity is to derivatively modify the spectrum; this process can be used to eliminate spectral interference, which in turn raises the assay's selection. Digital data derivatization is a well-known technique for separating valuable signals from noisy data, and it has been observed that the first derivative increases selectivity when first, second, third, and fourth derivatives are tested, from this point the research study is considered by the utilization of first order derivative spectrophotometry for the simultaneous determination of lutetium, terbium and thallium rare earth elements without extraction or separation. The developed procedure is simple, reliable and sensitive. This method allows the determinatio n of lutetium and terbium in a sample of phosphate rock. Optimum factors affecting the formation and measuring of the complexes such as wavelength, pH, initial dye concentration, molar ratio and linear calibration graphs in the range 0.25 to 12 µg -1 for Lu and Tb was obtained whereas relative standard deviation RSD% was 1.75 and 1.58 and percentage error 1.01 % and 0.91 % respectively.

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Section: Construction Of Calibration Curvesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Derivative Spectrophotometric Determination of Lu, Tb and Tm Using Fluorescein Dye

Abd Al Aziz

2024

Egypt. J. Chem.

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“…Как видно из табл. 1, в последнее время основными экстрагентами для отделения РЗП от ред-коземельной основы при анализе РЗЭ-руд являлись бис-(2-этилгексил)гидрофосфата (ГДЭГФ) [43], моно-2-этилгексиловый эфир 2-этилгексилфосфоновой кислоты [45], N-фенил-(1,2-метанофуллерена C60)61формогидроксамовая кислота (PMFFA) [46], каликс [4]резорцинаренгидроксамовая кислота (C4RAHA) [49], Cyanex 921 [51], Cyanex 272, D2EHPA, PC88A и Cyanex 301 [54], триоктилфосфиноксид (ТОФО) и триалкилфосфиноксид (TRPO) в керосине [55]. Недостатками метода жидкостной экстракции являются необходимость использования большого количества органических растворителей, многостадийность процесса, а также образование отходов, наносящих вред окружающей среде.…”

Section: концентрирование редкоземельных примесейunclassified

Review of separation and concentration techniques for impurities in rare earth-based materials for further spectral and mass spectral analysis

Petrova

Es’kina

Baranovskaya

et al. 2022

Izv.VUZ. Tsvet. Met.

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The effectiveness of using materials based on rare earth elements (REE) largely depends on their impurity composition, which affects their structure and properties. Before the analytical quality control of REE-based materials and initial substances for their production, it is necessary to determine both macrocomponents and impurity elements with high sensitivity and accuracy. A complex of atomic emission and mass spectral analytical methods is often used for the determination of impurities in REE-based materials in the range from 10–5 to 5.0 wt.%. However, the analysis of such materials, even using these modern high-sensitivity methods is a difficult task due to spectral and matrix interferences. Therefore, different preliminary separation/concentration procedures are needed to determine both rare earth and other impurities. This article reviews publications is devoted to preconcentration methods for spectral and mass spectral analysis of REEbased materials and, in part, a number of other analytical techniques. It was shown that the most common approaches are liquid extraction and chromatography. Sorption, cloud-point extraction and coprecipitation are also used. There is no universal method. Each of the methods discussed in this article has its own advantages and limitations. The analytical completion of the method confirms the effectiveness of the selected separation/concentration method in each specific case.

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Estimation of rare earth elements in Indian coal fly ashes for recovery feasibility as a secondary source

Sandeep

Maity

Mishra

et al. 2023

Journal of Hazardous Materials Advances

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Extraction and derivative spectrophotometric assay of Sm(III), Pr(III) and Nd(III) from REEs monazite concentrate

Cited by 7 publications

References 49 publications

Derivative Spectrophotometric Determination of Lu, Tb and Tm Using Fluorescein Dye

Derivative Spectrophotometric Determination of Lu, Tb and Tm Using Fluorescein Dye

Review of separation and concentration techniques for impurities in rare earth-based materials for further spectral and mass spectral analysis

Estimation of rare earth elements in Indian coal fly ashes for recovery feasibility as a secondary source

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