CEA, DAM, DIF, F-91297 Arpajon, France.
Anal Chim Acta. 2013 May 30;780:110-6. doi: 10.1016/j.aca.2013.04.019. Epub 2013 Apr 17.
Literature data on distribution ratios (Dw) of Np(V) and Pa(V) for the AG1-X8 resin are scarce whereas those related on resin capacity factors (k') values for TEVA, TRU and U/TEVA resins are absent. Therefore, batch extraction experiments for Pa(V) and Np(V) from HCl and HNO3 media were realized, at tracer scale, with AG1-X8 and EIChroM resins (TEVA, TRU and U/TEVA). Based on the new Dw and k' values obtained in this study, a new protocol for Pa/Np separation has been developed leading to a better separation factor of 10(5) and a chemical yield of 97±3% and 99±1% for Pa and Np, respectively. A separation of (231)Pa from uranium matrix was successfully tested.
文献中关于 AG1-X8 树脂对 Np(V)和 Pa(V)分配比 (Dw)的报道很少，而有关 TEVA、TRU 和 U/TEVA 树脂容量因子 (k')值的报道则完全没有。因此，我们进行了批处理实验，用 AG1-X8 和 EIChroM 树脂（TEVA、TRU 和 U/TEVA）从 HCl 和 HNO3 介质中萃取痕量 Pa(V)和 Np(V)。基于本研究中获得的新 Dw 和 k' 值，我们开发了一种新的 Pa/Np 分离方案，得到了更好的分离因子 10(5)，以及 Pa 和 Np 的化学收率分别为 97±3%和 99±1%。成功地测试了从铀基体中分离 (231)Pa。
