The Effect of Particle Size on the Carrier-Distillation Analysis of Pu02

摘要

Sample particle size is one of the parameters that must be controlled to ensure the similarity of samples and standards necessary for reliable spectro-chemical analysis. In spectrochemical carrier-distillation analysis of PuO2, significantly greater intensities are obtained from the impurity elements when the particle size of the Pu02 is 45 um or less. Large Pu02 particles, when present, reduce the intensities of the impurities and of cobalt, the internal standard. Because these intensity changes are not the same for each element, accurate spectrochemical values cannot be obtained when large PuO2 particles are present. Proper preparation of the Pu02 can be done easily by mortar grinding and mechanical mixing.