Determination of thorium in uranium ores
R. Ko, M. R. Weiler, Hanford Atomic Products Operation. Hanford Laboratories Operation, Hanford Works, U.S. Atomic Energy Commission, United States. Energy Research and Development Administration, United States. National Bureau of Standards. Fracture and Deformation Division, United States. Dept. of Energy. Office of Fusion Energy, United States. National Bureau of Standards
U.S. Atomic Energy Commission, 1960 - Spectrum analysis - 16 pages
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12 per cent 70 ug Zr acid leaching Add 5 ml Aerojet aluminum nitrate analytical analyzed for thorium anion Average tracer recovery Carbide Nuclear Company Cation exchange cent recovery Centrifuge coefficient of variation coprecipitated with lanthanum D. M. Robertson Decant supernate DETERMINATION OF THORIUM duPont Company Electric Company eluted EXTERNAL DISTRIBUTION final solution gram Hanford HCIO heat lamp HNOg hot plate hydrochloric acid Ion Exchange JACO lanthanum fluoride precipitation leach solution Mesityl oxide extraction mg/ml microphotometer ml with HgO National Lead Company nitric acid Number of Copies perchloric acid ppm of thorium precipitation and TTA purification step rare earths separation of thorium separatory funnel Shake benzene layer solution was evaporated spectrographic analysis spectrographic methods Table Th:Zr intensity ratios THORIUM FOUND SAMPLE thorium in uranium Thorium was coprecipitated Thorium was extracted Thorium-234 tracer Thoron colorimetric analysis Transfer TTA extraction U. S. Geological Survey Union Carbide Nuclear Wash zirconium internal standard