Determination of surface gold preg-robbed on carbonaceous matter from AC-POX/CIL stream products
Deliverables:
Characterization of different types of carbonaceous matter present in the sample:
Composition established by SEM/EDX (scanning electron microscopy coupled with energy dispersive x-ray analysis)
Structure (maturity) of the carbonaceous matter determined by laser Raman spectroscopy
Preg-robbing capacity of each type of carbonaceous matter evaluated by ToF-SIMS
Speciation and quantification of surface gold preg-robbed on carbonaceous matter by ToF-SIMS:
Detection (“speciation”) of different forms of gold preg-robbed on carbonaceous matter: metallic gold Au° and gold compounds (Au(CN)2–, AuCl2–, AuS(CN)2–…)
Quantification of the established forms of preg-robbed gold based on compound-specific Au standards in activated carbon
Independent evaluation of the total amount of surface gold preg-robbed on carbonaceous matter
