Contributions to the basic problems of complexometry--XXII: determination of thorium and scandium in the presence of each other.
A new method for the determination of thorium and scandium in the presence of each other is presented. Two aliquots of the solution are necessary. In one the sum of thorium and scandium is determined by direct titration with DCTA. In the second, thorium and scandium are treated with an excess of TTHA, phosphate is added, and zinc is used to titrate the excess of TTHA and to displace the scandium from its TTHA complex.
Pribil
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R
Analytical Laboratory, J. Heyrovský Polarographic Institute, CSAV Prague 1, Jilská 16, Czechoslovakia.
Veselý
V
V
Horácek
J
J