| 简介 |
The present invention comprises a method for enrichment of cations of elements Sc, Y is, ST, EC, public relations, LP, µm, nm, European, DG, of Tb, of Dy, FR, it, TM is, Yb and Lu in aqueous solution from mineral substrates by organic Phosphonäuren of formula (1) according to claim 1 as the main method step. For this is the enstsprechenden phosphonic acid derivatives of the formula (100) to (109) for the main process step preferably, wherein the main process step under pH adjusting agents and/or by the addition of chloride can who that optimized. The invention in its refinement independently comprises two steps for the substrate pretreatment, the extraction solution for each two treatment steps and a final treatment step, which are merged with the main process step to a generally applicable method in Apsruch total 10. Particularly advantage by a high efficiency and environmental friendliness haste the proposed enrichment method distinguishes itself. |
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