Pressurized-fluid extraction (PFE) of chlorinated paraffins from the biodegradable fraction of source-separated household waste |
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| Authors: | Marie-Louise Nilsson Monica Waldebäck Gustav Liljegren Henrik Kylin Karin E. Markides |
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| Affiliation: | (1) Department of Environmental Assessment, Swedish University of Agricultural Sciences, P.O. Box 7050, 750 07 Uppsala, Sweden, SE;(2) Department of Analytical Chemistry, Uppsala University, P.O. Box 531, 751 21 Uppsala, Sweden e-mail: monicaw@kemi.uu.se, SE |
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| Abstract: | A method is presented in which pressurized-fluid extraction (PFE) is used for the extraction of chlorinated paraffins (CP) from the biodegradable fraction of source-separated household waste. The conditions that were optimized for high recovery in the extraction procedure were extraction time, temperature, and the use of different solvents and different sample particle sizes. Recoveries of CP from fortified household waste material were over 90%, with only few interferences when cyclohexane was used as solvent. Extraction yields from contaminated samples containing CP were further compared with recoveries obtained by use of Soxtec extraction. The results showed that PFE is a rapid, low-solvent-consuming technique, giving high yields. Received: 13 November 2000 / Revised: 2 March 2001 / Accepted: 7 March 2001 |
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