Abstract: The ashing temperature could be increased and some interferences from hy-drochloric acid,molybdenum and boron could be eliminated in title method by using Pd and Nias a matrix modifier.The method can be used directly for lead and antimony analysis inhigh temperature nickel-alloy without preseparation of the matrix. The characteristic mass is 28pg and 26pg, the detection limit is 0.13μg/g and 0.23μg/g,the recovery is 94%～103% and 95%～110%,the relative standard deviation is 6.4%～7.6% and 4.7%～7.5% for leadand antimony,respectively.

Key words: graphite furnace atomic absorption, nickel alloy, lead, antimony, matrix modifier