Determination of cerium concentration in samples obtained during dissolution of CeO2 and (Ce, U)O2 mixed oxide
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A new Redox titrimetric procedure was developed for determination of cerium concentration after quantitative conversion of Ce(NO3)3 into Ce(SO4)2 using a mixture of concentrated perchloric and sulphuric acid. The precision and accuracy was estimated to be ± 2.0% for determination of Ce concentration in the range of 2–10 mg. The selectivity of the method was assessed by evaluating the effects of envisaged foreign compounds present in the samples obtained in dissolution of mixed oxide pellet consisting (Ce, U)O2 upon determination of cerium concentration. This proposed procedure has been employed for determination of cerium concentration in samples obtained in dissolution of CeO2 and mixed oxide pellet of (Ce, U)O2.
KeywordsReprocessing Ceric sulphate Redox titration MOX fuel Plutonium surrogate
Authors are highly indebted and extended their sincere thanks to Dr. A. Ravisankar, Director, Reprocessing Group, IGCAR and Dr. R. Natarajan, Former Director, Reprocessing Group, IGCAR for their valuable suggestion and guidance during course of this work. The valuable contribution of Dr. R.V. Subba Rao, Head, Process and Radio Chemistry Division, Reprocessing Group during preparation of this manuscript is greatly acknowledged. The valuable suggestion of Dr. N. Desigan, Reprocessing Group, during preparation of manuscript is highly acknowledged. The contributions of Shri Sathya Narayan Das, Shri Ganesh Mahadev and Shri N.Sreenivasan during experimental works are sincerely acknowledged.
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Conflict of interest
The authors declare that they have no conflict of interest.
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