Extraction of polycyclic aromatic nitrogen heterocycles from spiked soil samples |
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| Authors: | Kamila Kočí Hana Petrovská Elena VaraĎová Andrea Syslová |
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| Affiliation: | 1. Research Centre for Environmental Chemistry and Ecotoxicology , Masaryk University Brno , Faculty of Science, 126/3 Kamenice, 625 00 Brno, Czech Republic;2. Department of Environmental Chemistry and Technology , Brno University of Technology , Faculty of Chemistry, Purkynova 118, CZ-612 00 Brno, Czech Republic;3. Tyco Electronics Czech, KAMP , 664 34 Kurim, Czech Republic;4. Institute of Analytical Chemistry, Czech Academy of Science , Veveri 97, CZ-611 42 Brno, Czech Republic;5. Test-line Ltd, Clinical Diagnostics , Krizikova 70, CZ-612 00 Brno, Czech Republic |
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| Abstract: | Extraction recovery of 10 selected polycyclic aromatic nitrogen heterocycles (PANHs), quinoline, 2-methylquinoline, 6-methylquinoline, 8-methylquinoline, acridine, benzo[h]quinoline, phenantridine, indole, 2-methylindole, and carbazole from spiked soil samples was tested. Four different extraction techniques, pressurized solvent extraction (PSE), supercritical fluid extraction (SFE), Soxhlet warm extraction (SOXW) and standard Soxhlet extraction (SOX), were applied and compared. The RP-HPLC technique with a silica-based octadecyl stationary phase was used for recovery determination of individual PANHs. Supercritical fluid extraction has been found to be the most effective method for the extraction of selected PANHs from soil. PSE and SOXW methods offered similar results with slightly lower extraction recoveries compared with SFE. On the contrary, SOX is a time-consuming method with a low recovery of target analytes and is not suitable for the extraction of PANHs from soils. |
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| Keywords: | Polycyclic aromatic nitrogen heterocycles PSE Soxhlet SFE |
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