Is this Platin?

[leHAI]

Bros, please tell me is this Platin and how to get it from solution

I have materials which has gold so I put them to acid nitric solution to separate gold (picture 2)
I Test Stannous the solution and get the brown colour ( middle paper in picture 1)

 

[Yggdrasil]

Bros, please tell me is this Platin and how to get it from solution

I have materials which has gold so I put them to acid nitric solution to separate gold (picture 2)
I Test Stannous the solution and get the brown colour ( middle paper in picture 1)

What material do you have?
Nitric do not dissolve Platinum nor Gold.
It do dissolve Palladium and Silver.
This color seem like one of the false positives.

 

[leHAI]

What material do you have?
Nitric do not dissolve Platinum nor Gold.
It do dissolve Palladium and Silver.
This color seem like one of the false positives.

the material is the connector coated gold, you can see it in picture 2,
i still can not split gold from them, maybe i will use aqua regia

 

[Yggdrasil]

the material is the connector coated gold, you can see it in picture 2,
i still can not split gold from them, maybe i will use aqua regia

The Nitric dissolves the inside of the pins as far as it can.
There is no Pd or Pt in pins.
Did you heat your reaction?

 

[anarxi]

If the connectors are magnetic, then there is nickel there.
at least the sublayer on which gold is applied.
Nickel does not dissolve in nitric acid, even with heating.
platinum and gold are a rare combination, these are just some kind of military connectors or gold-plated contacts from a relay.