Multicomponent spectral fitting(MSF) is an important method of interference correction. It is little used for analysis of biological samples because of the complicated matrix. In this thesis, MSF method is used to correct the complicated matrix interference. Trace element in pork liver had been determinated using this method, got satisfied results. The detection limts of Pb and Mo were 5.02μg/L, 2.32μg/L. The recoveries of Pb and Mo were 97.2% ,92.1%. The re...