Trace metal assay of U(3)O(8) powder by electrothermal AAS
A G Page1, S V Godbole, M J Kulkarni
1Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Bombay 400085, India.
Abstract:
Methods have been developed for the direct determination of Ag, Ca, K., Li, Mg, Na, Pb, Sn and Zn in U(3)O(8) powder samples by electrothermal AAS. Nanogram and lower amounts of these elements have been determined with a relative standard deviation of 6-16% in mg amounts of sample (either alone or mixed with an equal weight of graphite). The results for NBL reference samples were in reasonable agreement with the certified values. X-Ray diffraction studies on the residues left from the graphite mixtures after the atomization cycle, confirmed the formation of uranium carbide (UC(2)).
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