The extraction and determination of thiocyanate complexes by use of polyurethane foam.
Metal thiocyanate solutions were extracted with polyether-type polyurethane foam and the metal contents determined by X-ray fluorescence. Iron, cobalt and zinc were extracted individually and collectively from 3.0M NH(4)Cl and 1.0M NH(4)SCN solutions. Similarly platinum and palladium could be simultaneously extracted from 0.12MNH(4)SCN and 5.0MNH(4)Cl for subsequent determination. The metal extractions were more than 95% complete and the determination of one metal was not affected by the presence of the others.
Chow
A
A
Department of Chemistry, University of Manitoba, Winnipeg, Manitoba, Canada.
Ginsberg
S L
SL