How to remove Arsenic from mine slime?

[DelayNoMore]

The mine slime content is as follow
gold ~2000ppm
silver ~7000ppm
platnium ~4ppm
palladium ~10ppm
nickel ~2%
copper ~27%
selenium ~7%
arsenic ~1000ppm
chloride ~1000pm

i know that arsenic is a very strong posion to human and environment
1.) so is 1000ppm of arsenic dangerous?
2.) how to remove the arsenic without losing the metal content?

3.) how to extract and refine the selenium?
thanks for your information

 

[Lino1406]

Selen and arsenic are soluble in CS2 - somewhat stinking material.

 

[Lino1406]

Note: this can be the last step in a procedure you
probably know, which will give you them both with the
precious metals

 

[Irons]

The Selenium is very toxic as well, and there's a lot more of it. The Classic procedure is to boil in HBr. The Selenium and Arsenic will distill off as the Bromide.
The problem is that the Bromides of Selenium And Arsenic are also extremely toxic. This has to be done in a sealed system with good ventilation and air filtration.
This is not something you can do in the back shed. It will also cost a LOT of money to set-up.