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Concentration and separation of trace metal cations by complexation on polyamine-polyurea resins

✍ Scribed by Dingman, Joseph.; Siggia, Sidney.; Barton, Carlos.; Hiscock, Kathryn B.


Book ID
126176958
Publisher
American Chemical Society
Year
1972
Tongue
English
Weight
838 KB
Volume
44
Category
Article
ISSN
0003-2700

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a-Hydroxyisobutyronitrile (acetone cyanohydrin, ACH) reacts with metals in ammoniacal medium and yields cyano complexes of negative charge. On this basis, Ni2+, Cu2+, Hg2+, Zn2+, Cd2+ and Fe2+ can be separated on a strongly basic anion exchanger in the chloride form as cyano complexes from Mg2+, Ba2