Solvent extraction of uranium(Ⅵ) and europium(Ⅲ) from nitrate media by picolinamide

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The solvent extraction of uranium(Ⅵ) and europium(Ⅲ) from nitric acid solution was studied with picolinamide dissolved in ethylene dichloride. The distribution ratios of U(Ⅵ) and Eu(Ⅲ) as a function of aqueous HNO3 concentration, extractant concentration
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