Investigations on the supercritical fluid extraction of spiked organic pollutants from wet soils |
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| Authors: | Barbara Witter Wittko Francke Hans-Diethard Knauth |
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| Affiliation: | (1) Institut für Physikalische und Chemische Analytik, GKSS Forschungszentrum Geesthacht GmbH, Max-Planck-Strasse, D-21502 Geesthacht, Germany;(2) Institut für Organische Chemie, Universität Hamburg, D-20146 Hamburg, Germany |
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| Abstract: | The possibility of a fractionation (sequential extraction) of certain groups of compounds has been investigated during supercritical fluid extraction (SFE) from wet and dry wetland-soils. The classes of compounds considered are chlorinated hydrocarbons on the one hand and nitrogen- or phosphorus-containing pesticides (N/P-pesticides) on the other hand. The results show the great influence of water on the efficiency of the extraction and the limited possibility of attaining a fractionation during the extraction. |
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