Determination of uranium after its selective extraction as phenylacetate.
The method described is based on the extraction of uranium with a chloroform solution of phenylacetic acid from slightly acidic solution containing nitrilotriacetic acid, which masks all interfering metals. After stripping into very dilute hydrochloric acid, uranium is reduced with ascorbic acid and determined complexometrically. The method permits reliable determination of uranium in the presence of all quadri-, ter- and bivalent metals investigated, molybdenum(VI), tungsten(VI), and vanadium(V).
Adam
J
J
Analytical Laboratory, Institute of Geological Sciences Charles University, Prague 2, Albertov 6, Czechoslovakia.
Pribil
R
R