| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To recover a metal from an aqueous solution which contains a metal complex containing hydantoin and its derivative as a ligand. <P>SOLUTION: A compound of the metal is precipitated by adding sulfuric acid or hydrochloric acid to the aqueous metal complex solution to adjust pH value to <1. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
