SEPARATION OF URANIUM FROM BISMUTH USING TRIS(2-ETHYLHEXYL)PH0SPHINE OXIDE Increase in Selectivity with 1,2-Cyclohexylene Dinitrilo Tetraacetic Acid

摘要

The work was designed to find a quick and straightforward method for the separation of trace amounts of uranium from large excess of bismuth, allowing for a subsequent determination of the former. It has been shown that the possibility of such separations using tris (2-ethylhexyl) phosphine oxide can be enhanced if another masking agent is introduced into the system. Extraction with tris (2-ethylhexyl) phosphine oxide in the presence of 1, 2-cyclohexylene dinitrilo tetraacetic acid followed by ultraviolet absorption has been successfully utilized to develop a method for the separation of uranium from 20,000-fold excess of bismuth.