Cloud point extractive spectrophotometric method for determination of uranium in raffinate streams during spent nuclear fuel reprocessing

A cloud point extractive spectrophotometric method was developed for the determination of uranium in raffinate streams. Uranium was extracted to a tri n -octyl phosphine oxide in o -Xylene from raffinate. Uranium present in organic phase was analyzed by spectrophotometry after cloud point extraction...

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Bibliographic Details
Published in:Journal of radioanalytical and nuclear chemistry 2019-11, Vol.322 (2), p.743-750
Main Authors: Mukhopadhyay, Chandan, Suba, M., Sivakumar, D., Dhamodharan, K., Rao, R. V. Subba
Format: Article
Language:English
Subjects:
Absorptivity
Analysis
Cetyltrimethylammonium bromide
Chemistry
Chemistry and Materials Science
Diagnostic Radiology
Hadrons
Heavy Ions
Inorganic Chemistry
Methods
Nuclear Chemistry
Nuclear energy
Nuclear fuel reprocessing
Nuclear industry
Nuclear Physics
Physical Chemistry
Reactor fuel reprocessing
Spectrophotometry
Spent nuclear fuels
Spent reactor fuels
Streams
Trioctylphosphine oxide
Uranium
Xylene
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Summary:A cloud point extractive spectrophotometric method was developed for the determination of uranium in raffinate streams. Uranium was extracted to a tri n -octyl phosphine oxide in o -Xylene from raffinate. Uranium present in organic phase was analyzed by spectrophotometry after cloud point extraction of U-PAR (4-(2-Pyridylazo) resorcinol) complex to cetyl trimethyl ammonium bromide—Triton-X-100 medium. The molar absorption coefficient for uranium complex was found to be 2.2 × 10 4  l mol −1  cm −1 . The relative standard deviation for the determination of uranium was found to be 3.9% and with a minimum detection limit of 2 µg uranium per aliquot.
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-019-06704-5