COMPARISON OF SUPERCRITICAL-FLUID EXTRACTION AND SOXHLET EXTRACTION FOR THE DETERMINATION OF POLYCHLORINATED-BIPHENYLS IN ENVIRONMENTAL MATRIX STANDARD REFERENCE MATERIALS

Supercritical fluid extraction (SFE) was compared to traditional Soxhl et extraction for the determination of polychlorinated biphenyl congen ers in three standard reference materials: SRM 1941a (Organics in Mari ne Sediment), SRM 1944 (New York/New Jersey Waterway Sediment) and SRM 2974 [Organics in Mussel Tissue (Mytilus edulis) (Freeze-Dried)]. The concentrations determined using SFE compared well with the certified concentrations for the majority of the polychlorinated biphenyl congen ers. Published by Elsevier Science B.V.