Comparison of extraction methods for polycyclic aromatic hydrocarbon determination in sediments |
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| Authors: | Ivan Holoubek Jaakko Paasivirta Paula Maatela Mirja Lahtiperä Irena Holoubková Pavel Korínek |
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| Institution: | 1. Department of Environmental Studies , Purkyněe University , Kotlárská 2, Brno, 611 37, Czechoslovakia;2. Department of Chemistry , University of Jyv?skyl? , Kyllikinkatu 1–3, Jyv?skyl?, SF 40100, Finland;3. Czech Hydrometeorological Institute Praha , Station GEMS, Ko?etice, 394 22, Czechoslovakia;4. Hygienic Station Brno , Cornovova 68, 618 00, Czechoslovakia |
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| Abstract: | Different sample preparation methods for the determination of polycyclic aromatic hydrocarbons (PAHs) in lake and river sediments were compared and evaluated. Freeze‐dried sediment materials were extracted using Soxhlet extraction, ultrasonic agitation and digestion with various solvents and solvent mixtures. Similarly, clean‐up methods using various types of sorbents for separation of PAHs tested. The following method gives the best results for the determination of PAHs: freeze‐dried sediment samples were extracted using Soxhlet extractor with dichloromethane (6 hr, dark), extracts were cleanup using Silica gel and a mixture of n‐hexa‐ne‐dichloromethane was used for the elution of PAHs. This method was used for the determination of 7 selected PAHs in sediment samples from Finnish lakes and Czech streams. |
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| Keywords: | PAHs analysis extraction recovery sediment samples |
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