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Comparison of supercritical fluid extraction and Soxhlet extraction for the determination of polychlorinated
M M Schantz1, S Bøwadt, B A Benner
1Analytical Chemistry Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA.
Abstract:
Supercritical fluid extraction (SFE) was compared to traditional Soxhlet extraction for the determination of polychlorinated biphenyl congeners in three standard reference materials: SRM 1941a (Organics in Marine 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 congeners.
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