Extraction of Mo, W and Tc with polyurethane foam and with cyclic polyether from SCN-/HCL medium.
The extraction of molybdenum, tungsten and technetium by polyether-based polyurethane foam and by a cyclic polyether from aqueous thiocyanate solutions is described. The influence of the reductants stannous chloride and ascorbic acid has also been studied. The possibilities of the polyurethane foam for preconcentration and determination of molybdenum are discussed.
Caletka
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Sektion Analytik und Höchstreinigung, Universitat Ulm, Oberer Eselsberg N 26, D-7900 Ulm/Donau, F.R.G.
Hausbeck
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Krivan
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