Abstract:Sub-silver residue?is the main by-product of copper anode mud electrolysis which contains a measureable amount of noble metals of platinum and palladium. In this study, a method based on ICP-OES was described for rapid and accurate determination of platinum and palladium content in sub-silver samples. Fire assay preconcentration was used to obtain composite granule which were dissolved in 10% aqua-regia for sample preparation.The described?method?showed?good?precision and?high?accuracy with recovery rate ranged from 98.4% to 102%, and can be widely utilized for platinum and palladium content measurement in sub-silver residue.