which metals are leachable

[future gold refiner]

Hello,
I want to refine some waste which consists of differend precious metals.
I decided to use a ammonium thiosulfate / ammonium leach with copper as catalyst. (because its harmlessness)

my question: which precious metals are leachable with this leach except for gold and silver?
...platinum ?, palladium ?... other platinum group metals?

thanks a lot for answer.

 

[Oz]

I have not used ammonium thiosulfate, so I will not venture opinion there.

I will say however that copper is not always benign as a salt or in solution. Always practice accepted safe lab practices.

Wo bist du in Deutschland? Früher habe ich in Hochheim am Main leben, und arbeitete für UPS-Hub Wiesbaden.

 

[future gold refiner]

I have made some test with "my" save thiosulfate leach (with copper) and it leaches gold ...but I am interested to know -> does it leaches platinum group metals