Analysis of 63Ni in radwastes by extraction chromatography and radiometric techniques
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In this study, a practical method for the determination of 63Ni in radwaste samples was established. The results showed that the condition of duplicate elution with the Ni-resin column and the presence of the carrier Mn can effectively remove unwanted interfering radionuclides with decontamination factors of >104 for 60Co. The highest activity of 63Ni in radwaste samples was determined to be 2.86 ± 0.04 Bq/g, whereas the minimum detectable amount was approximately 0.04 Bq/g. The established separation technique can be used for the practical determination of 63Ni in radwastes and for the classification of radwastes.
Keywords63Ni Ni-resin LSC HPGe detector Radwaste
The authors sincerely thank Ms. Meng-Chen Lee and Hsueh-Ping Lee from Nuclear Science & Technology Development Center, National Tsing Hua University, Taiwan, for data collection and technical support on LSC and γ-ray measurement, respectively. We also thank our co-workers in the Chemistry Division, Institute of Nuclear Energy Research, Longtan, Taiwan, for data collection on ICP-OES.
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