H2 O2调价UTEVA树脂对钚的分离方法

摘要

The conditions of adj usting Pu valence to Pu(Ⅳ)by H2 O2 were studied.H2 O2 is capable of converting Pu to Pu(Ⅳ)if the Pu concentration is about 10-3 g/L.The separation procedure was studied for small quantity Pu.w=1.5% H2 O2 is used to adj ust the valency of plutonium in 6 mol/L HNO3 .UTEVA column filled with 2 mL resin which has a diameter of 50-100μm are used to separate plutonium.The recovery of plutonium is about 108%.%研究了 H2 O2调节钚价态至Pu(Ⅳ)的条件，对于钚质量浓度在10-3 g/L量级的溶液，适量 H2 O2可以将钚价态稳定在Pu(Ⅳ)。采用粒径为50~100μm的 UTEVA树脂填充的柱体积为2 mL的萃取色层柱，在6 mol/L HNO3浓度下，使用w=1.5%H2 O2作为氧化还原剂对10-2 g/L的钚进行预处理，能将钚吸附上柱。通过适当条件的洗脱，在铀、镎、钚混合溶液中，得到钚的回收率约为108%。