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Analysis of Polychlorinated Biphenyls in Fatty Biological Matrixes by On-Line Supercritical Fluid Extraction and Supercritical Fluid Cleanup

Analysis of Polychlorinated Biphenyls in Fatty Biological Matrixes by On-Line Supercritical Fluid Extraction and Supercritical Fluid Cleanup

E G Alley, G Lu

J AOAC Int. Jul-Aug 1995;78(4):1051-4.

PMID: 7580317

Abstract:

We present a method that combines the extraction of polychlorinated biphenyls (PCBs) and their separation from relatively large quantities of fat in biological matrixes by combined supercritical fluid extraction and separation. Cyano-functionalized silica gel, silica gel, aluminum oxide, Florisil, 3-amino-propyl-functionalized silica gel, and octadecyl-functionalized silica gel were tested for suitability as chromatographic media for separation of PCBs from lipids. Silica gel, 3-aminopropyl-functionalized silica gel, and Florisil adequately separated PCBs from lipids when eluted with supercritical CO2. Florisil allowed both the extraction of PCBs and their separation from lipids in PCB-spiked chicken egg and fish. Two grams of sample containing PCBs at 0.125 microgram/g was sufficient for subsequent separations and the low-level analysis required for the more toxic PCB components.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
LPLC82244	3-Aminopropyl-functionalized silica gel			Price
LPLC82246	Octadecyl-functionalized silica gel			Price

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