Abstract − Analytical Sciences, 24(4), 531 (2008).
Selective Pressurized Liquid Extraction of Polychlorinated Biphenyls in Sediment
Rikard WESTBOM,* Sune SPORRING,** Louise CEDERBERG,* Lars-Ola LINDEROTH,* and Erland BJÖRKLUND*,**
*Department of Analytical Chemistry, Lund University, P. O. Box 124, SE-221 00 Lund, Sweden
**Department of Pharmaceutics and Analytical Chemistry, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
**Department of Pharmaceutics and Analytical Chemistry, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
A selective pressurized liquid extraction procedure (SPLE) was developed for a fast determination of polychlorinated biphenyls in sediment. The final method was performed at 100°C with heptane/dichloromethane (90:10, v/v) as extraction solvent for 2 × 5 min. Sulfuric acid impregnated silica was placed downstream of the sample in the extraction cell to remove interfering components. This simultaneous extraction/clean-up was performed in 20 min, with an average congener recovery of 92% compared to a classical 24 h Soxhlet methodology and 2 h of external manual clean-up.
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