title: Polychlorinated biphenyl (PCB) recovery from spiked organic matrix using accelerated solvent extraction (ASE) and Soxhlet extraction.
abstract: The recovery of five PCB congeners from PCB spiked organic matrices was studied using Accelerated solvent extraction (ASE) and Soxhlet extraction (SE). The chromatogram of ASE extract was found to be relatively clean and similar to that of SE extract. ASE extraction efficiency was dependent on the operation temperature and sample size loading. ASE showed extraction efficiency comparable or slightly higher to that of SE for the PCB spiked organic matrix. PCB recovery from spiked matrix was dependent on the type and molecular weight of congener, and nature of matrix. For some selected PCB congeners, ortho-substitution did influence the PCB recovery from graphite matrix.
authors.affiliation: Department of Chemistry, Howard University, 525 College Street, NW, Room 120, Washington, DC 20059, USA.
authors.forename: Y
authors.initials: Y
authors.lastname: Abrha
authors.forename: D
authors.initials: D
authors.lastname: Raghavan
mesh_terms: D003031:Coal; D004787:Environmental Pollution / Q000517:prevention & control; D006108:Graphite / Q000737:chemistry; D006812:Humic Substances / Q000737:chemistry; D007220:Industrial Waste; D011078:Polychlorinated Biphenyls / Q000737:chemistry* / Q000302:isolation & purification; D012989:Soil Pollutants / Q000032:analysis; D012997:Solvents / Q000737:chemistry*; D018505:Waste Management / Q000379:methods*
chemical_list: D003031:Coal; D006812:Humic Substances; D007220:Industrial Waste; D012989:Soil Pollutants; D012997:Solvents; D006108:Graphite; D011078:Polychlorinated Biphenyls