Evaluation of homogeneity of marine biological tissues for lead and cadmium by GFAAS

Abstract
Several marine biological tissues were tested for homogeneity with respect to lead and cadmium. The variance for the certified reference material TORT-1 is approximately 1 μg/g for each metal. This is of the same order as the heterogeneity of spray-dried dogfish and swordfish tissue. Scallop adductor muscle was of the same level of heterogeneity for cadmium; the lead content was below the limit of detection of the procedure used.