Determination of neptunium by redox titration.
A simple and quick method for the potentiometric determination of neptunium on the 2-5 mg scale has been developed. It consists of oxidation to Np(VI) by AgO or fuming with HClO(4), destruction of excess of AgO by sulphamic acid, reduction of Np(VI) to Np(IV) with a slight excess of standard Fe(II) in 2M H(2)SO(4) and potentiometric titration of the excess of Fe(II) with standard Ce(IV). The precision is +/-0.5%.
Godbole
A G
AG
Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Bombay 400 085, India.
Patil
S K
SK