A Scheme for the Separation of Platinum, Palladium, Rhodium, and Iridium by Solvent Extraction.

Abstract

Attempts were also made to use MTC as an extractant for Tc(III) or Tc(IV).Only 2.4% of the technetium could be extracted from the green colored solution of Tc(III) which was obtained by coulometric reduction of a Tc(VII) solution, 0.1 M in HC1 and 0.5AÍ in KC1, at -0.03 volt vs. S.C.E. Since a

Nucleonics

“…Maeck and others (992), Ochsenfeld and Krawczynski (1196), Seleborg (1489, 1490), and Ishimori et al (704,705), and others (192,193,389,442,461,489,723,841,1054,1251,1503,1505,1516,1719,1755,1756,1766) give general information about solvent extraction applications. New equipment for liquid-liquid extraction was described by Lindstroem and Flink (964) and Zaborenko (1744).…”

Determination of Pd(II) in Street Dust and Water Samples by FAAS after Preconcentration with Dimethylglyoxime-Anchored Organobentonite

“…Therefore, due to the effect of matrix and low concentrations of palladium, a separation and preconcentration procedure prior to detection is required. The widely used techniques for the separation and preconcentration include solvent extraction [6][7][8], co-precipitation [9], ion-exchange [5] and solid phase extraction (SPE) [10,11], etc. In those techniques, SPE has found increasing application for the preconcentration and separation.…”

Rapid determination of rhodium and palladium using liquid-liquid extraction with tricaprylmonomethylam-monium chloride and flame photometry

“…While these elements are fission products, they are for the most part nonradioactive, and both have concentrations of about 13 ppm in the supernatant waste solution. A current research program for the recovery of these elements is described by Guay (7).…”

“…While this system could be applied to a countercurrent extraction series, a single contact separation would not be satisfactory. Faye and Inman (7) extracted the iodide complexes of palladium and platinum into tributyl phosphate to separate them from rhodium and iridium. Thus, the available separation techniques did not apply to the waste solutions.…”