| 摘要 |
PROBLEM TO BE SOLVED: To provide a production method for high concentration gold particulates by which gold particulates having a remarkably high concentration can be produced by eliminating the intervention of impurities. SOLUTION: In the production method for high concentration gold particulates, a gold ion-containing aqueous solution and a protective agent are mixed in alcohol, the obtained precipitates are filtered, recovered, and dried to produce a first solid, the first solid is dipped into the alcoholic solution of a reducing agent to produce a second solid, and the second solid is filtered, and cleaned with alcohol. COPYRIGHT: (C)2004,JPO
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