Pu ISOTOPES AND ~(241)Am ACTIVITIES DETERMINATION IN THE EVALUATION OF RADIOCHEMICAL SEQUENTIAL ANALYZES METHODOLOGY FOR EVAPORATOR CONCENTRATE SAMPLES USING ALPHA SPECTROMETRY

摘要

Alpha spectrometry analyzes were used for activity determinations of Pu and Am isotopes in evaporator concentrate samples from nuclear power plants. In this work it was used tracers for isotopes determination and quantification. The radiometric yields ranged from 60% to 100% and the Lower Limit of Detection was estimated as being 2.05 mBqKg~(-1). The relative standard deviations for replicate analysis were calculated for ~(241)Am, 15.13% (sample J) and 9.38% (sample N), and for ~(239+240)Pu, 8.16% (sample J) and 7.95% (sample N).