Abstract
A novel extraction chromatographic resin comprised of diamyl amylphosphonate sorbed on an inert polymeric support (Amberlite XAD-7) for the separation and preconcentration of uranium from nitric and hydrochloric acid solutions is described. Uranium sorption by the resin is shown to be most efficient at high (> 1 M) acid concentrations. Sorbed uranium can be readily eluted using dilute acid. The application of the material to the isolation of uranium from various environmental samples (e.g., groundwater and soil) is described. Uranium recoveries from these samples are shown to be consistently high (ca. 95%).
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