Abstract：It only took 5-6 min to determine powdered copper concentrate at 253.7 nm by a direct mercury analyzer without the need of sample digestion. In order to reduce the damage of mercury in sample to the instrument and guarantee the accuracy of determination results, the sampling amount was 0.15 g. Meanwhile, single determination mode was used to reduce the memory effect of sample boat. The detection limit of this method was 0.2 μg/kg. The content of mercury in three national certified reference materials of copper concentrate with different content ranges was determined. The results were consistent with those obtained by national standard method. The relative standard deviations (RSD) were smaller than or equal to 4.7%, and the recoveries were 98%-102%.
