Anion-exchange behaviour of several elements in hydrobromic acid-organic solvent media.

The anion-exchange behaviour of 19 elements in hydrobromic acid-organic solvent media has been investigated. The batch distribution coefficients of the metal ions were determined in these systems employing the strongly basic anion-exchange resin Dowex 1, x 8. Organic solvents used were methanol, ethanol, n-propanol, isopropanol, methyl glycol, acetone, tetrahydrofuran and acetic acid. The most suitable conditions for some quantitative separations based on these equilibrium studies are indicated and discussed.