Abstract
We herein present a suquential procedure for separation of nuclides such as 55Fe, 94Nb, 59,63Ni, 90Sr, and 99Tc from activated carbon and stainless steel samples orignating from low and intermediate level of radioactive waste. Initially, iron was removed through the precipitation of Fe(OH)3 upon the addition of NH4OH. The recoveries of Fe and Nb in the precipitate were 98.4 ± 2.9 and 98.5 ± 0.52%, respectively, while those of Ni, Re, and Sr in the supernatant were 74.0 ± 4.0, 96.7 ± 1.2, and 79.6 ± 1.2%, respectively. However, due to the especially low recovery of Re from the supernatant following anion exchange chromatography, the Fe precipitate was removed after the separation of Re by anion exchange chromatography. Our results indicate that this procedure is suitable for providing pure nuclides from waste samples to allow the measurement of their radioactive activities.
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This work was performed as part of the Nuclear Research and Development Program of the Ministry of Science, ICT and Future Planning (MSIP).
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Choi, KS., Lee, C.H., Im, HJ. et al. Separation of 99Tc, 90Sr, 59,63Ni, 55Fe and 94Nb from activated carbon and stainless steel waste samples. J Radioanal Nucl Chem 314, 2145–2154 (2017). https://doi.org/10.1007/s10967-017-5566-6
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DOI: https://doi.org/10.1007/s10967-017-5566-6