Investigation of the usefulness of NTA, EDTA and DTPA in separation of some platinum metals on cellulose exchangers.
The possibility of using NTA, EDTA and DTPA as complexing agents for separation of some platinum group ions on cellulose ion-exchangers has been investigated. The greatest differences in the affinities of Pd(II) and Pt(IV) toward the cellulose ion-exchangers are obtained in the presence of DPTA, Cellex D (as ion-exchanger) in hydroxide form. The column separation of Pd(II) from Pt(IV), Rh(III) from Pd(II) and of a Rh(III)Pd(II)Pt(IV) mixture can be achieved with DPTA and chloride solutions. The method can be for determination of the components of RhPdPt alloys.
Darstellung und Charakterisierung aller Platinmetall-8-Hydroxychinolate
SummaryThe preparation of all platinum metal 8-hydroxyquinolinates (oxinates) is described. The metal ligand ratio of the chelates was determined by elemental analysis, the method of Yoe Jones (Ru, Os, Ir, Pt), and secondary ion mass spectrometry (SIMS). The absorption spectra of all platinum metal oxinates were recorded. The stability of chloroformic solutions of the platinum metal oxinates against solutions of hydrochloric acid, sulfuric acid, and sodium hydroxide has been investigated.
Separation of Ruthenium from Base Metals by Cation Exchange.
A method for the separation of ruthenium from large amounts of associated base metals in dilute hydrochloric acid solution by cation exchange resin is described. The method was also applied for the determination of ruthenium in a copper-nickel-iron assay button.