1991 Volume 64 Issue 6 Pages 1962-1965
Scandium was quantitatively extracted at pH 2.5–4.5 with 4.0×10−2 mol dm−3 18-crown-6 in dichloromethane from 4.0×10−2 mol dm−3 solution of picric acid. It was stripped with 0.1 mol dm−3 nitric acid and determined spectrophotometrically at 650 nm as its complex with Arsenazo-III. It was separated from yttrium, lanthanides, zirconium, hafnium, vanadium, niobium, and uranium in multicomponent mixtures. Scandium from rock sample was also analysed.
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