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The Effects of Various Grades of Graphite Electrodes on the Carrier Distillation of Impurities in U3O8

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Seven grades of graphite electrodes were evaluated for their effects upon the carrier distillation excitation of impurities in U3O3. Two carrier materials, AgCl-LiF (11.1) and Ga2O3, were independently investigated using a Wadsworth mount spectrograph and a Quantometer. Time resolved spectra for 19 impurities were made by recording the instantaneous response of each impurity in the arc for each type of graphite electrode. Elemental sensitivity comparisons were made from the measured area under each spectral recording.

The analytical precisions of the elements (B, Cr, Cu, Fe, Mn, Ni, and Si) for each graphite type were determined from replicate analyses of common U3O8 samples. The comparative precision data show that a selection of a graphite type, which provides the greatest advantages for determining impurities in U3O8 with carrier distillation techniques, can be made.

Document Type: Research Article


Affiliations: 1: National Lead Company of Ohio, Cincinnati, Ohio 2: National Lead Company of Ohio, Cincinnati, Ohio; present address: United Aircraft Co, E Hartford, Conn.

Publication date: September 1, 1963

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