| 摘要 |
<p>PURPOSE:To increase remarkably the rate of extraction by adding alkylbenzenesulfonic acid, dialkylnaphthalenesulfonic acid or a metallic salt thereof to acidic phosphoric ester, carboxylic acid or a chelating reagent as a cation exchange type extracting reagent. CONSTITUTION:Metallic ions are extracted from an acidic aqueous soln. with an org. solvent contg. acidic phosphoric ester, carboxylic acid or a chelating reagent. At this time, alkylbenzenesulfonic acid, dialkylnaphthalenesulfonic acid or a metallic salt thereof is added to the org. solvent or the acidic aqueous soln. This extracting method is especially effective in extracting Al<3+>, Ga<3+> and Fe<3+>.</p> |
