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Aqua Regia Gold and Aluminum

Will aluminum in an aqua regia solution with gold cause problem precipitating gold from solution? I'm trying to strip gold from Computer CPU's. 2 of the cpus have small aluminum heat syncs. There are about 20 cpus total.

Chad Arlt
- Alpena, Michigan, US
2003

I would suggest filtering your solution before precipitating the gold, other than that it shouldn't be a problem. You could always dissolve the aluminum in sodium hydroxide first if desired.

Good Luck,

Jim Sivertsen
- Alden, New York, U.S.A.
2003

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