title: Determination of weight distribution ratios of Pa(V) and Np(V) with some extraction chromatography resins and the AG1-X8 resin.
abstract: 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.
authors.affiliation: CEA, DAM, DIF, F-91297 Arpajon, France.
authors.forename: M
authors.initials: M
authors.lastname: Mendes
authors.forename: J
authors.initials: J
authors.lastname: Aupiais
authors.forename: C
authors.initials: C
authors.lastname: Jutier
authors.forename: F
authors.initials: F
authors.lastname: Pointurier
mesh_terms: D005591:Chemical Fractionation / Q000295:instrumentation / Q000379:methods; D002845:Chromatography / Q000295:instrumentation* / Q000379:methods*; D009405:Neptunium / Q000737:chemistry*; D011478:Protactinium / Q000737:chemistry*
chemical_list: D011478:Protactinium; D009405:Neptunium