Separation and determination of uranium in phosphoric acid medium using high-performance ion chromatography

A new method is presented for measuring of uranium at low levels in crude phosphoric acid without preconcentration or complexing agents using Dionex DX-500 ion chromatograph. Two isocratic elutions namely; 7 mM PDCA (for eluting the interfering cations) and 0.3 M (NH 4 ) 2 SO 4 /0.1 M HCl (for urani...

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Bibliographic Details
Published in:Journal of radioanalytical and nuclear chemistry 2019-08, Vol.321 (2), p.413-419
Main Authors: El Gammal, Entesar M., Ahmed, Sherien H.
Format: Article
Language:English
Subjects:
Acids
Ammonium sulfate
Chemistry
Chemistry and Materials Science
Chromatography
Diagnostic Radiology
Fertilizers
Flow velocity
Hadrons
Hazardous substances
Heavy Ions
Inorganic Chemistry
Nuclear Chemistry
Nuclear Physics
Phosphate industry
Phosphates
Phosphoric acid
Physical Chemistry
Radioactive substances
Separation
Uranium
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Summary:A new method is presented for measuring of uranium at low levels in crude phosphoric acid without preconcentration or complexing agents using Dionex DX-500 ion chromatograph. Two isocratic elutions namely; 7 mM PDCA (for eluting the interfering cations) and 0.3 M (NH 4 ) 2 SO 4 /0.1 M HCl (for uranium separation) with flow rate of 0.9 and 0.7 ml/min respectively. The optimized developed method has been validated by its application for the analysis of uranium in a certified sample (GBW04115).The developed method has been successfully applied to the determination of uranium in the prepared synthetic orthophosphoric acid and the crude phosphoric acid.
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-019-06600-y