title: Comprehensive comparison of classic Soxhlet extraction with Soxtec extraction, ultrasonication extraction, supercritical fluid extraction, microwave assisted extraction and accelerated solvent extraction for the determination of polychlorinated biphenyls in soil.
abstract: This paper compares the extraction effectiveness of six different commonly applied extraction techniques for the determination of PCBs in soil. The techniques included are Soxhlet, Soxtec, ultrasonication extraction, supercritical fluid extraction, microwave-assisted extraction and accelerated solvent extraction. For none of the techniques were the extraction conditions optimized, but instead the extraction parameters were based on the experience from previous successful investigation published by a number of research groups worldwide. In general, all extraction techniques were capable of producing accurate data for one native PCB contaminated soil diluted with another soil sample to obtain two concentration levels. It could therefore be concluded that any of the investigated techniques can be used with success if the extraction conditions applied are chosen wisely.
authors.affiliation: Department of Analytical Chemistry, Lund University, P.O. Box 124, SE-22100 Lund, Sweden.
authors.forename: Sune
authors.initials: S
authors.lastname: Sporring
authors.forename: Søren
authors.initials: S
authors.lastname: Bøwadt
authors.forename: Bo
authors.initials: B
authors.lastname: Svensmark
authors.forename: Erland
authors.initials: E
authors.lastname: Björklund
mesh_terms: D000096:Acetone; D005591:Chemical Fractionation / Q000379:methods*; D025924:Chromatography, Supercritical Fluid / Q000379:methods*; D006586:Hexanes; D008872:Microwaves; D010575:Pesticides / Q000032:analysis*; D011078:Polychlorinated Biphenyls / Q000032:analysis*; D012987:Soil / Q000032:analysis*; D012989:Soil Pollutants / Q000032:analysis; D012997:Solvents; D014465:Ultrasonics
chemical_list: D006586:Hexanes; D010575:Pesticides; D012987:Soil; D012989:Soil Pollutants; D012997:Solvents; D000096:Acetone; C026385:n-hexane; D011078:Polychlorinated Biphenyls