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HomeMiningExploration ServicesGeochemistryPrecious MetalsPGE by Nickel Sulphide FA
The nickel sulfide fusion is the industry standard method used to determine platinum group elements. It is slow, expensive and involves the use of highly toxic carbonyl nickel powder. Its advantage is that, when combined with ICP-MS detection, it gives reliable results for all of the PGE at low detection limits because these metals are quantitatively extracted into the nickel button.
The method involves mixing nickel powder, sulfur, sodium carbonate, borax and sample pulp together in a crucible and fusing it at over 1000°C for an hour. As the NiS matte button forms, it extracts the PGE from the sample. The button is then crushed and dissolved and the residue is filtered to remove extraneous material, leaving the precious metal residue on the filter. There are several options for determining their concentrations:
Partner with SGS today for unparalleled nickel sulfide fire assay results.