论文部分内容阅读
作者用天然丰度的钐氧化物(Sm_2O_3,~(152)Sm丰度为26.7％)作靶料,在中子注量率为4×10~(13)n/cm~2·s的条件下,照射时间大于110h,可得核纯很高。比度不低于5.18GBq(140mCi)/mg Sm_2O_3的~(153)Sm。~(153)Sm与EDTMP(乙二胺四甲撑膦酸)络合条件的研究表明:在pH为8-10的范围内,沸水浴中反应30min,~(153)Sm-EDTMP产率大于98％。采用~(153)Sm示踪法测定了Sm(~(153)Sm)-EDTMP的组成,结果证明,Sm(~(153)Sm)与EDTMP络合组成为1:1。~(153)Sm-EDTMP稳定性实验结果表明:在络合物形成后的一个星期内,产率基本不变。
The authors use the natural abundance of samarium oxide (Sm 2 O 3, ~ (152) Sm abundance of 26.7%) as the target material. Under the conditions of neutron fluence rate of 4 × 10 ~ (13) n / cm ~ 2 · s Under irradiation time is greater than 110h, can be pure nuclear high. The ratio of ~ (153) Sm is not lower than 5.18GBq (140mCi) / mg Sm_2O_3. The results show that the yield of ~ (153) Sm-EDTMP is greater than that of ~ (153) Sm-EDTMP in the boiling water bath for 30min when the pH is in the range of 8-10, and the complexing conditions of ~ (153) Sm and EDTMP (ethylenediamine tetramethylene phosphonic acid) 98%. The composition of Sm (~ (153) Sm) -EDTMP was determined by ~ (153) Sm tracing method. The results show that the complex of Sm (~ (153) Sm) and EDTMP is 1: 1. The results of the ~ (153) Sm-EDTMP stability experiment show that the yield does not change substantially within one week after the complex formation.