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N,N-Dialkylamides (monoamides) are known as extractants for U and Pu, and many studies have been carried out mainly by single-stage batch method. We have focused on two monoamides: N,N-di(2-ethylhexyl)-2,2-dimethylpropanamide (DEHDMPA) and N,N-di(2-ethylhexyl)butanamide (DEHBA), and proposed a multistage extraction process for recovering U and Pu by these monoamides. A continuous counter-current experiment...
Cation-exchange displacement chromatography of VO 2+ was carried out for studying vanadium isotope fractionation in the malate complex formation system. After the chromatographic elution, the heavier isotope 51 V was found to be enriched at the front boundary of the VO 2+ band, which indicates that the heavier isotope is preferentially fractionated into the malate...
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