本文较详细地研究了U()在稀TBP/煤油中的分配。U()在稀TBP/煤油中的分配比D受HNO3、Al(NO3)3、TBP、U浓度以及温度等因素的影响。低酸度下,随HNO3浓度增大,D迅速增大,HNO3浓度约5mol/L时,D达到最大值,然后又随HNO3浓度增大而缓慢减小。在较低HNO3浓度下,D随Al(NO3)3浓度的增大 This paper studies the distribution of U () in dilute TBP / kerosene in more detail. The distribution ratio U of U () in dilute TBP / kerosene is influenced by factors such as HNO3, Al (NO3) 3, TBP, U concentration and temperature. Under low acidity, D increased rapidly with increasing concentration of HNO3. When HNO3 concentration was about 5 mol / L, D reached its maximum and then decreased slowly with the increase of HNO3 concentration. At lower concentrations of HNO3, D increases with the concentration of Al (NO3) 3