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The extraction of iridium and platinum from organic solvents by polyurethane foam

R A Moore1, A Chow

  • 1Department of Chemistry, University of Manitoba, Winnipeg, Manitoba, Canada.

Talanta
|April 1, 1980
PubMed

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Extraction: Advanced Methods00:56

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Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is formed in...