RARE METAL/PLATINUM-BASED METAL EXTRACTANT, AND METHOD FOR EXTRACTING RARE METAL/PLATINUM-BASED MET

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PROBLEM TO BE SOLVED : To provide a rare metal/platinum-based metal extractant having a completely new structure which cannot be seen in the conventional rare earth/platinum-based metal extractants and having excellent extracting performance and also to provide a method for extracting rare metal/platinum-based metal using the same. SOLUTION : The rare metal/platinum-based metal extractant is characterized as follows : a solution in which several rare metals/platinum-based metals are dissolved is brought into contact with a solution in which a cyclic phenol sulfide expressed by general formula (1) is dissolved, and thereby, each rare metal/platinum-based metal is transferred to the cyclic phenol sulfide solution and each rare metal/platinum-based metal can be extracted. COPYRIGHT : (C)2009, JPO&INPIT