| Summary: | 碩士 === 文化大學 === 應用化學系 === 85 === Uranium Oxide was dissolved with nitric acid and phosphorous
acid in theanion form of [ UO2(HPO4)2 ]-2 ,then the sample
solution of 0.5% phosphorousacid was controlled by a four
channel peristaltic pump and a six-way adjust-able injection
valve, pass through a Bio-Rad 50*8 cation column. The
cationimpurities were absorbed onto the resin while the matrix
of anion [ UO2(HPO4)2 ]-2 was drained. When the
whole volume of Uranium solution through the column, adjust
theinjection valve to 2M nitric acid solution to elutriate the
impurities thathad been absorbed into the cation exchange
column. this eluent was then determined by ICP-AES for the
impurities of the Uranium Oxide. The resultsshow that more than
98% of Uranium matrix was separated by this method.The recovery
of impurities of iron, copper,nickel, aluminum, and chromiumwas
between 98.2-103% , relative standard deviation ( RSD ) were
0.3-13%and detection limits were 2-57ug/g.
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