| 摘要 |
<p>1,206,038. Lanthanide separation. COMMISSARIAT A L'ENERGIE ATOMIQUE. 15 Nov., 1968 [17 Nov., 1967], No. 54424/68. Heading C1A. [Also in Division G6] Lanthanides present in an aqueous solution are separated by adding an alcohol, e.g. ethanol and, if necessary, nitrate ions, e.g. in the form of ammonium nitrate, to convert the elements into the nitrate form, passing the alcoholic solution through an anion-exchange resin in the nitrate form, and eluting the elements from the resin by adding a solution containing nitrate ions, the alcohol used in the solution containing the absorbed elements, and a complexing agent consisting of an ethyleneaminoacetic acid, e.g. diethylenetriaminepentaacetic acid (DTPA). Examples describe the separation of europium and promethium.</p> |
