Abstract
The application of the solvent-free micellar extraction as an alternative method to the liquid-liquid extraction for the enrichment of polychlorinated biphenyls (PCBs) from ultrapure and natural water is presented. A nonionic surfactant was used to preconcentrate the PCBs. After a clean-up consisting of two columns (silica gel and Florisil) the analytes were identified and quantified by GC-ECD. Recoveries for spiked water were up to 100%. For highly contaminated seepage water of landfills liquid-liquid extraction is involving great problems with the phase separation of water and solvent. According to our results, the micellar extraction is superior to the liquid-liquid extraction for this difficult kind of aqueous matrix.
Original language | English |
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Pages (from-to) | 743-746 |
Number of pages | 4 |
Journal | Fresenius' Journal of Analytical Chemistry |
Volume | 357 |
Issue number | 6 |
DOIs | |
State | Published - 1997 |