Journal of Radioanalytical and Nuclear Chemistry

, Volume 201, Issue 3, pp 191–198 | Cite as

Solvent extraction of rhodium, ruthenium, and iridium with HDEHP

  • G. L. Yan
  • J. Alstad


Solvent extraction of rhodium, ruthenium, and iridium with HDEHP from thioureachloride media was investigated. Under the conditions ([Cl]=0.50 M, [HDEHP]=1.0M, [SC(NH2)2]=0.50M, pH=4.50, phase contact time 1 min), Rh(III) is extracted 88.3%, Ru(III) and Ir(III) 40.8% and 28.5% respectively at phase ratio 1∶1. The formation of rhodium-thiourea complexes in aqueous solutions, even at 5M chloride concentration, with the possible composition Rh[SC (NH2)2]63+ is confirmed by the observed molar ratio of thiourea to rhodium and UV-spectra.


Chloride Physical Chemistry Aqueous Solution Inorganic Chemistry Ruthenium 
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Copyright information

© Akadémiai Kiadó 1995

Authors and Affiliations

  • G. L. Yan
    • 1
  • J. Alstad
    • 1
  1. 1.Department of ChemistryUniversity of OsloOsloNorway

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