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Published on: June 6, 2018
Development of separation techniques for analysis of Nb-94 in radwaste samples
C L Kuo1, T L Tsai2, K S Chang-Liao3
1Institute of Nuclear Engineering and Science, National Tsing Hua University, Hsinchu 30013, Taiwan ROC; Department of Nuclear Medicine, Hsinchu Mackay Memorial Hospital, Hsinchu 30071, Taiwan ROC.
Abstract:
A chemical separation technique for removing interfering gamma-ray radionuclides by combined precipitation of Nb pentoxide and anion exchange was proposed, thereby allowing detection of trace 94Nb in low-level radwastes. The detection limit for 94Nb was improved by a factor of 10-103, and the scaling factor (94Nb/60Co) of the radwastes was estimated to be less than 10-5. This technique can be used for low-level radwaste classification and power reactor decommissioning.
