This work presents basic information on preparing previously handled samples of soils and sediments in order to determine low concentrations of different organic contaminants (Volatile Organic Compounds (VOCs), Polychlorinated Biphenyls (PCBs), Polychlorinated Aromatic Hydrocarbons (PAHs), pesticides, and Polychlorinated Dibenzo-p-dioxins and Polychlorinated Dibenzofurans (PCDD/F), etc.). Solid environmental samples such as soils and sediments are subjected to different pretreatment processes, including: - isolation and preconcentration of analytes from the sample matrix, - clean-up of extracts, and - preconcentration of analytes from a secondary matrix (solvent, gas). The literature described here is closely related to these analytical operations. A separate chapter focuses on the application of Supercritical Fluid Extraction (SFE) in analytics of organic pollutants in solid environmental matrices. Today SFE is becoming the most often used technique in these areas.
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