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本文测定了用二-(2-乙基已基)磷酸(HDEHP)从硝酸溶液中萃取Am(Ⅲ)和Eu(Ⅲ)分配系数与稀释剂、萃取剂浓度、水相酸度和硝酸铝、硝酸钠浓度的关系。并以Sr(Ⅱ)为裂片元素代表,测定了萃取剂浓度和酸度与分配系数的关系。考虑到实际应用,比较了经纯化和未经纯化的HDEHP对萃取、分离的影响。最后提出了几种可能采用的串级实验条件。
In this paper, the partition coefficient of Am (Ⅲ) and Eu (Ⅲ) extracted from nitric acid solution with diluent, extractant concentration, aqueous phase acidity and the molar ratio of aluminum nitrate to nitric acid Sodium concentration of the relationship. The Sr (Ⅱ) fragment was taken as the representative element. The relationship between extractant concentration and acidity and partition coefficient was determined. Considering the practical application, the effects of purified and unpurified HDEHP on extraction and separation were compared. Finally, several possible cascade experimental conditions are proposed.