Non-Chemical Was doing a "cook" of AR & gold jewelry......H

[Paige]

Went a lilttle too long and got some black burned stuff and some liquid. Added distilled water & AR and it filled out to green liquid with some remnants of jewelry in bottom.

No boil over./ Just cooked too long; evaporated too much.

Have I lost gold or just what was left of my mind?

Really dumb Paige

 

[Noxx]

No you did not loose any gold. Gold won't evaporate.

 

[Paige]

Many thanks.

 

[Harold_V]

No you did not loose any gold. Gold won't evaporate.

Ahh! But it will!

If, when you're evaporating gold chloride solutions, you heat to hot, you will, indeed, lose some gold. You'll also lose some if you don't keep your containers covered while it's dissolving, due to the effervescence carrying minute globules of gold chloride out of the container.

When you are dissolving gold, keep it covered with a watch glass, which condenses and drops solution back in to the container in use.

When evaporating, watch the cloud coming from the evaporating dish (or beaker). If there is any trace of color (you should see nothing but what folks like to call "steam"), you're evaporating too fast (too hot), and you're losing gold. That's one of the reasons you should run the discharge from a fume hood through a filter that recovers values.

Harold