本文研究了在TBP-煤油体系中光化还原制取U(Ⅳ)时,降解产物的产生和它们对萃取性能的影响。结果表明,TBP-煤油的主要降解产物有DBP和MBP、羰基化合物和硝基烷。光照后的有机相经稀酸反萃和碱洗所得回收萃取剂的萃铀分配比、铀保留值和分相时间与新鲜萃取剂无明显差别)。 In this paper, the photodegradation of TBP-kerosene system U (Ⅳ), the degradation products and their impact on the extraction performance. The results show that the major degradation products of TBP-kerosene are DBP and MBP, carbonyl compounds and nitroalkanes. The light extraction of the organic phase by dilute acid stripping and caustic soda derived extraction recovery of uranium distribution ratio, uranium retention and phase separation time and fresh extractant no significant difference).