CERTIFICATION OF POLYCHLORINATED BIPHENYL CONGENERS AND CHLORINATED PESTICIDES IN A WHALE BLUBBER STANDARD REFERENCE MATERIAL

A Standard Reference Material (SRM) made from whale blubber has been d eveloped for the validation of methods used for the determination of p olychlorinated biphenyl (PCB) congeners and chlorinated pesticides. Th is material, which is a frozen blubber tissue homogenate, was analyzed using three different analytical techniques. These techniques were ba sed on gas chromatography with electron capture detection on two stati onary phases with different selectivity for the separation of PCB cong eners and gas chromatography with mass spectrometric detection. The re sults from these three techniques were in good agreement and were comb ined to provide certified concentrations for 27 PCB congeners and 15 c hlorinated pesticides.