ZiegenSauger
Well-known member
- Joined
- May 18, 2020
- Messages
- 73
Friends,
Long learning, many mistakes, these are the results I need critique if any of you have time.
First, 300g of Pd? Please not the color differences, first two vials I am quite confident since they were precipitated after dissolving in Nitric using 999 Cu coins.
The redish orange ones came from SMB. The remainder either from DMG or - the creamy yellow - from Ammonium Chloride + Sodium Chlorate:
Next the - apparently - more realistic Pt. The two on the left were precipitated with Zn and the two on the right with Cu:
Lastly, this filter contains the very last recovery from all dirty solution. Solids were processed with hot nitric, washed thoroughly with hot water and then processed with Aqua Regia.
This is what came out after leaving the solution with Cu:
I would like please to hear your critique, some of the colours do not feel right to me (Pt seems hunky dory).
The last precipitate on the filter I have no clue. Original Aqua Regia solution was positive for Pt before dipping Cu into it..
I am quite certain there is gold contaminant, For most of the vials, Stannous showed sundry tints of Gold as well.
Thnks in advance, any comment or critique will be more than welcome.
The source material was vintage old and was Pd plated with gold, even so 300g seems overkill.
Cheers!
Long learning, many mistakes, these are the results I need critique if any of you have time.
First, 300g of Pd? Please not the color differences, first two vials I am quite confident since they were precipitated after dissolving in Nitric using 999 Cu coins.
The redish orange ones came from SMB. The remainder either from DMG or - the creamy yellow - from Ammonium Chloride + Sodium Chlorate:
Next the - apparently - more realistic Pt. The two on the left were precipitated with Zn and the two on the right with Cu:
Lastly, this filter contains the very last recovery from all dirty solution. Solids were processed with hot nitric, washed thoroughly with hot water and then processed with Aqua Regia.
This is what came out after leaving the solution with Cu:
I would like please to hear your critique, some of the colours do not feel right to me (Pt seems hunky dory).
The last precipitate on the filter I have no clue. Original Aqua Regia solution was positive for Pt before dipping Cu into it..
I am quite certain there is gold contaminant, For most of the vials, Stannous showed sundry tints of Gold as well.
Thnks in advance, any comment or critique will be more than welcome.
The source material was vintage old and was Pd plated with gold, even so 300g seems overkill.
Cheers!