Simultaneous extraction and clean-up of polychlorinated biphenyls and their metabolites from small tissue samples
Izabela Kania-Korwel1, Hongxia Zhao, Karin Norstrom
1Department of Occupational and Environmental Health, Collage of Public Health, University of Iowa, Iowa City, IA 52242, USA.
Abstract:
A pressurized liquid extraction-based method for the simultaneous extraction and in situ clean-up of polychlorinated biphenyls (PCBs), hydroxylated (OH)-PCBs and methylsulfonyl (MeSO(2))-PCBs from small (<0.5 g) tissue samples was developed and validated. Extraction of a laboratory reference material with hexane-dichloromethane-methanol (48:43:9, v/v) and Florisil as fat retainer allowed an efficient recovery of PCBs (78-112%; RSD: 13-37%), OH-PCBs (46+/-2%; RSD: 4%) and MeSO(2)-PCBs (89+/-21%; RSD: 24%). Comparable results were obtained with an established analysis method for PCBs, OH-PCBs and MeSO(2)-PCBs.
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