REACTION OF NP(V) WITH REDUCTANTS IN ALKALI SOLUTIONS

Authors
GARNOV AY YUSOV AB SHILOV VP KROT NN
Citation
Ay. Garnov et al., REACTION OF NP(V) WITH REDUCTANTS IN ALKALI SOLUTIONS, Radiochemistry, 39(6), 1997, pp. 508-510
Citations number
2
Journal title
Radiochemistry → ACNP
ISSN journal
10663622
Volume
39
Issue
6
Year of publication
1997
Pages
508 - 510
Database
ISI
SICI code
1066-3622(1997)39:6<508:RONWRI>2.0.ZU;2-U
Abstract
Reduction of Np(V) in NaOH solutions is studied spectrophotometrically . Sodium dithionite (Na2S2O4) slowly reacts with Np(V) at 20-25 degree s C, and thiourea dioxide reacts on heating. In the presence of N2H4 . HNO3 reduction occurs with a moderate rate at 20 degrees C in 1.7-8 M NaOH solutions. The reaction accelerates with increasing temperature and reductant concentration and decelerates with increasing NaOH conce ntration. Hydroxylamine is effective in 0.5-5 M NaOH above 60 degrees C.