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

Concerning the great significance of rare-earth elements (REEs) in high-technology field and nuclear power, the target of this work is selective extraction and accurate spectrophotometric determination of Sm (III), Pr (III) and Nd (III) from REEs monazite concentrate using Cyanex 921 as extractant a...

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Bibliographic Details
Published inInternational journal of environmental analytical chemistry Vol. 101; no. 6; pp. 849 - 868
Main Authors Guirguis, L., Orabi, A., Mohamed, B.
Format Journal Article
LanguageEnglish
Published Abingdon Taylor & Francis 03.05.2021
Taylor & Francis LLC
Subjects
Analytical methods
Cyanex 921
derivative spectrophotometric
Dyes
Extraction
Monazite
Nuclear energy
Parameters
Praseodymium
Rare earth elements
Selectivity
Spectra
Spectrophotometry
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Summary:Concerning the great significance of rare-earth elements (REEs) in high-technology field and nuclear power, the target of this work is selective extraction and accurate spectrophotometric determination of Sm (III), Pr (III) and Nd (III) from REEs monazite concentrate using Cyanex 921 as extractant and Chrome azurol S dye. Effects of different extraction parameters were evaluated. To elucidate the selectivity and overcoming spectral interferences, derivatisation of spectra was studied. The fourth-derivative spectra were investigated to eliminate interferences of Sm (III), Pr (III) and Nd (III) in presence of each other after their extraction by Cyanex 921 and gave significant peaks for Sm (III), Pr (III) and Nd (III) at 315, 309 and 318 nm, respectively. The optimum parameters for extraction by Cyanex 921 and fourth-derivative spectra using Chrome azurol S dye were applied for the determination of Sm (III), Pr (III) and Nd (III) in REEs monazite concentrate with accurate results.
ISSN:0306-7319
1029-0397
DOI:10.1080/03067319.2019.1672673