Radiochemical Separations by Liquid-Liquid Chromatography Using PSM Support

Abstract
Radiochemical separations of metal ions by LLC were carried out on 2-cm long minicolumns packed with 4–6 μm porous silica microspheres containing 25 to 30 weight percent of 1.5 F di(2-ethylhexyl)phosphoric acid in dodecane. Column performance was evaluated using the elution of both tracer and macro quantities of Eu(lll). Plate heights for tracer scale elutions were 0.015–0.025 mm and 0.05–0.07 mm at v = 2 and 30cm/min, respectively. The separation of certain dipositive metal ions, tripositive lanthanide ions, and tripositive transplutonium ions were studied using the high efficiency minicolumns.

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