Abstract
AbstractBy using Th‐234 as tracer, the synergistic effects in the extraction of thorium from aqueous solutions with mixtures of organic solvents were investigated for the system Th4+/β‐diketones/TBP/diluents. Four β‐diketones, i. e., acetylacetone, benzoylacetone, dibenzoylmethane and trifluoroacetone, were used. Synergistic enhancements on the distribution ratios were observed in all cases except when acetylacetone was used as the chelating agent at the pH range of 2–3. Based on the experimental observations, a plausible mechanism for the synergistic effect has been suggested. The effect of diluent is also dicussed.
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