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Using supercritical fluid extraction to measure the desorption and bioaccessibility of phenanthrene in soils.

Research output: Contribution to journalJournal article


Journal publication date12/2008
JournalEnvironmental Pollution
Number of pages7
Original languageEnglish


The aim of this paper was to measure the changing desorbable fraction and bioaccessibility of phenanthrene in two different soils with increasing soil-phenanthrene contact time using supercritical fluid extractions (SFE). Both soils were spiked with 100 mg kg(-1) phenanthrene and aged for 28 d. Desorption profiles were measured every 7 d using selective SFE conditions and the results were compared to C-14-phenanthrene mineralisation assays. Selective SFE showed significant differences in the rates and extents of desorption in the two soils, likely to be due to different organic matter composition. Post-extraction fitting of data yielded consistent SFE extraction times within ageing soils for bioaccessibility prediction. (C) 2008 Elsevier Ltd. All rights reserved.