APPLICATION OF ACCELERATED SOLVENT-EXTRACTION FOLLOWED BY GAS-CHROMATOGRAPHY, HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHY AND GAS-CHROMATOGRAPHYMASS-SPECTROMETRY FOR THE DETERMINATION OF POLYCYCLIC AROMATIC-HYDROCARBONS, CHLORINATED PESTICIDES AND POLYCHLORINATED DIBENZO-P-DIOXINS AND DIBENZOFURANS IN SOLID-WASTES

Accelerated solvent extraction (ASE) is a new method for the extractio n of organic compounds from soils, sludges and other wastes. Due to th e elevated temperatures and pressures, the ASE is a time-saving proced ure with low consumption of solvents. Applications of this procedure f or the determination of chlorinated pesticides in contaminated soils, for the determination of polycyclic aromatic hydrocarbons in heap mate rial, slurry from copper smelting (Theissenschlamm) and soils and for the determination of polychlorinated dibenzo-p-dioxins and dibenzofura ns in a fly ash sample are given. Optimization of the procedure relati ng to extraction time, number of extractions and solvents is described . Comparisons with other extraction methods (Soxhlet extraction and au tomated Soxhlet extraction) are carried out. (C) 1997 Elsevier Science B.V.