Biamperometric methodology for sequential determination of thorium and uranium

A biamperometric methodology for the sequential determination of thorium (Th) and uranium (U) was developed. In the sample solution containing Th and U, Th was first determined by complexometric titration based on the electrochemical behaviour of EDTA maintaining a potential of ≥200 mV between the t...

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Bibliographic Details
Published in:Journal of radioanalytical and nuclear chemistry 2013-02, Vol.295 (2), p.1431-1434
Main Authors: Kamat, J. V., Gamare, J. S., Jayachandran, K., Aggarwal, Suresh K.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Diagnostic Radiology
EDTA
Electrochemical reactions
Hadrons
Heavy Ions
Inorganic Chemistry
Nuclear Chemistry
Nuclear Physics
Physical Chemistry
Uranium
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Summary:A biamperometric methodology for the sequential determination of thorium (Th) and uranium (U) was developed. In the sample solution containing Th and U, Th was first determined by complexometric titration based on the electrochemical behaviour of EDTA maintaining a potential of ≥200 mV between the twin Pt electrodes. This was followed by the redox titrimetric determination of U employing biamperometry to detect the end point. Prior to the determination of U, EDTA was destroyed by fuming with concentrated HClO 4 to eliminate its interference in the U determination. The method was tested for the determination of Th and U in (Th, U) O 2 samples containing 4 mg of Th and 2–8 mg of U, with precision and accuracy of better than 0.3 %.
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-012-2283-z