title: Selective pressurized liquid extraction of polychlorinated biphenyls in sediment.
abstract: 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 degrees C with heptane/dichloromethane (90:10, v/v) as extraction solvent for 2x5 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.
authors.affiliation: Department of Analytical Chemistry, Lund University, Lund, Sweden.
authors.forename: Rikard
authors.initials: R
authors.lastname: Westbom
authors.forename: Sune
authors.initials: S
authors.lastname: Sporring
authors.forename: Louise
authors.initials: L
authors.lastname: Cederberg
authors.forename: Lars-Ola
authors.initials: LO
authors.lastname: Linderoth
authors.forename: Erland
authors.initials: E
authors.lastname: Björklund
mesh_terms: D004785:Environmental Pollutants / Q000737:chemistry / Q000302:isolation & purification*; D019015:Geologic Sediments / Q000737:chemistry*; D011078:Polychlorinated Biphenyls / Q000737:chemistry / Q000302:isolation & purification*; D012822:Silicon Dioxide / Q000737:chemistry; D013464:Sulfuric Acids / Q000737:chemistry
chemical_list: D004785:Environmental Pollutants; D013464:Sulfuric Acids; D012822:Silicon Dioxide; D011078:Polychlorinated Biphenyls; C033158:sulfuric acid