Synergistic extraction of U(VI) and separation of U(VI) and Th(IV) from nitric acid with HBMPPT and DOSO in toluene[J]. Nuclear techniques, 2000, (1).DOI:
Shanghai 201800)The synergistic extraction of U(VI) and separation of U(VI) and TI(IV) from nitricacid solution by HBMPPT (4-benzoyl-2
4-dihydro-5-mepgrazol-3-thione) and DOSO (di-n-octyl sulfoxide) in toluene was studied. Theextraction ability of HBMPPT was not so high as that of its parent (HBMPP)
butwhen a little DOSO was added in
the ability to extract U(VI) was improved rapidly.The syndrgistic extracted complexes may be presented as a mixture of UO
2
NO
3
BMPPT
UO
2
NO
3
BMPPT. DOSO
UO
2
(BMPPT)
2
and UO
2
(BMPPT)
2
. DOSO forU(VI). When HBMPPT-DOSO was used to separate U(VI) from TI(W)
the separationcoefficient reached 523 under certain condition.