Selective complexation, followed by solvent extraction for the separation, enrichment and determination of uranium, has remained of analytical interest for a number of years. Liquid chromatography for the determination of uranium has proved to be valuable since the advent of micro-particle stationary phases. High-performance liquid chromatography (HPLC) with postcolumn and precolumn derivatization has been effectively used for the determination of uranium. For postcolumn derivatization, the commonly complexing reagents used are Arsenazo III and 4-(2′-pyridyl)resorcinol.
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