A fast, precise, and accurate x-ray emission spectrographic method has been developed for the determination of uranium in high-grade (70% to 99% U3O8) uranium concentrates. No chemical separations are required. After acid decomposition, yttrium is added as an internal standard, and the uranium in dilute acid solution is determined by x-ray emission techniques. The standard deviation obtained for the average of the mean by analysis of six portions of the same sample is 0.03% U3O8. Such precision is equivalent to that of the more complicated titrimetric methods conventionally used.
LangridgeR. W.BushW. E.HigginsL. J., and WilliamsC. W., “Handbook of Analytical Procedures,” U. S. Atomic Energy Commission Grand Junction Operations Office Analytical Laboratory, Grand Junction, Colo., RMO-3001 (revised 1 June 1961), p. 48.
2.
PishG., and HuffmanA. A., Anal. Chem.27, 1875 (1955).
3.
KehlW. L. and RusselR. G., Anal. Chem.28, 1350 (1956).
