HCl and Bleach Process for Gold Foils

[eprigge]

I apologize, I'm sure the information I want is here somewhere I just can't seem to find it searching or in the library.

What is the process for dissolving gold foils (from AP-digested fingers) using HCl and bleach? I am thinking of submerging the foils in full-strength HCl and then adding small amounts of bleach, step-wise until they are gone. I assume room temperature/cold is better for keeping the Cl in solution? Don't add too much bleach at once so Cl doesn't blow off? I saw someone say that the bleach should be injected at the bottom of the mixture, though I'm not sure why.

Once dissolved and filtered, I have SMB for reduction. Is any post-processing of the resulting mixture needed before SMB?

Any specific advice would be appreciated, thank you!

 

[Yggdrasil]

I apologize, I'm sure the information I want is here somewhere I just can't seem to find it searching or in the library.

What is the process for dissolving gold foils (from AP-digested fingers) using HCl and bleach? I am thinking of submerging the foils in full-strength HCl and then adding small amounts of bleach, step-wise until they are gone. I assume room temperature/cold is better for keeping the Cl in solution? Don't add too much bleach at once so Cl doesn't blow off? I saw someone say that the bleach should be injected at the bottom of the mixture, though I'm not sure why.

Once dissolved and filtered, I have SMB for reduction. Is any post-processing of the resulting mixture needed before SMB?

Any specific advice would be appreciated, thank you!

Your plan will work.
The not add too much bleach goes equally much into not neutralizing the HCl.
Nothing special to do after dissolving, just let it sit a day or so or give it a good heating, not boil.