title: Collection efficiency of various solid-phase traps for off-line supercritical fluid extraction.
abstract: Solid-phase extraction tubes were evaluated as traps for off-line supercritical fluid extraction. Normal- and reversed-phase traps were studied with hydrocarbons, phenols, and a "test mixture" in order to determine the trapping efficiency. These traps were then used for the extraction of PCBs from river sediment. Polyethylene frits were also investigated for their use as solid-phase traps in SFE.
authors.affiliation: Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg 24061.
authors.forename: L J
authors.initials: LJ
authors.lastname: Mulcahey
authors.forename: J L
authors.initials: JL
authors.lastname: Hedrick
authors.forename: L T
authors.initials: LT
authors.lastname: Taylor
mesh_terms: D011078:Polychlorinated Biphenyls / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D014874:Water Pollutants, Chemical; D011078:Polychlorinated Biphenyls