The present method describes the determination of uranium(IV) using th
e extractospectrophotometric technique, and that of hydrazine utilizin
g the potentiometric titration method. Both uranium(IV) and hydrazine
are estimated from the same sample. Interference studies of several an
ions and cations were also carried out. The relative standard deviatio
n for uranium(IV) at 5.4 mg level was found to be 1.03% and that for h
ydrazine at 3.69 mg level was calculated to be 1.43%.