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Dear,
We just started to use the fire assay method at our company and we have a problem dissolving the gold/silver after cuppelation. We want to use a ICP-OES or FAAS finish for gold but when we dissolve it with aqua regia the little ball of gold/silver turns black and doesn't dissolve completely and a too low concentration of gold is found.
Any tips on dissolving the gold?
Thanks in advance!
We just started to use the fire assay method at our company and we have a problem dissolving the gold/silver after cuppelation. We want to use a ICP-OES or FAAS finish for gold but when we dissolve it with aqua regia the little ball of gold/silver turns black and doesn't dissolve completely and a too low concentration of gold is found.
Any tips on dissolving the gold?
Thanks in advance!