Hi there, hoping someone can help me. I usually extract Pd using nitric acid and then precipitate salt with DMG. On this occasion of refining jewellers sweep that were mainly 18k gold, Pd did not extract with nitric acid. It did extract when I used Aqua Regia however and tested red using SnCl2 indicator after I precipitated out the gold with MBS. Now I have an aqua regia solution that tests positive for Pd but DMG is not pulling it out of solution?? Any ideas?? Its probably the presence of HCl in the solution right? What can I do now?
Thanks
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