Abstract:

Abstract: A method was studied for analysis of Pb，Cd，Cr，Cu and As in tea-camellia seed oil by using ICP-MS. The instrument parameter and microwave digestion condition were optimized and internal standard of 187Re，103Rh and 45Sc was selected to compensate the drift of analytical signals. The detection limits of these 5 elements were 0.36-1.64μg/kg. The addition standard recovery was 84%—111% ，and the RSD was 1.6%-7.6%（n=5） for 5 elements. The accuracy of the method was evaluated by the analysis of corresponding trace heavy metal elements in standard reference material (GBW10016 and GBW10019). The analytical method presented was characterized with rapidness, good precision, accuracy, low limits of detection.