Mistakes were made.
Used thiolsulphate to leach gold plated pins, got a clear solution.
Then added hcl to get to a ph of 3-4 and added smb. And then realised smb doesn't work with thiolsulphate.
The solution turned a yellow murky colour, i suspect the ph caused the thiolsuphate to degrade, fine gold in solution, no longer dissolved.
Dunno how to get the gold now?
High salt from both HCL and NaOH that were added to adjust ph, can't tell ph from high salt.
Used thiolsulphate to leach gold plated pins, got a clear solution.
Then added hcl to get to a ph of 3-4 and added smb. And then realised smb doesn't work with thiolsulphate.
The solution turned a yellow murky colour, i suspect the ph caused the thiolsuphate to degrade, fine gold in solution, no longer dissolved.
Dunno how to get the gold now?
High salt from both HCL and NaOH that were added to adjust ph, can't tell ph from high salt.