Gold and silver in dross were determined by energy-dispersive X-ray fluorescence technique. Sample was prepared by pressed pellet method using microcrystalline cellulose powder as binder, and a method of standard additions was used for quantification. L β X-ray of gold (11.4 keV) and K β X-ray of silver (24.9 keV) were used for analysis. The measured concentrations of gold and silver were 132 ± 8 and 1181 ± 84 mg kg À1, respectively. The results were validated by instrumental neutron activation analysis technique. The t-test indicated that there was no significant difference between results obtained by the two techniques. Energy-dispersive X-ray fluorescence is a simple, precise and accurate technique for the determination of gold and silver in dross.

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