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

J. L. Stroud*, A. H. Rhodes, K. T. Semple, Z. Šimek, J. Hofman

*Corresponding author for this work

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

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 14C-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.

Original languageEnglish
Pages (from-to)664-670
Number of pages7
JournalEnvironmental Pollution
Volume156
Issue number3
DOIs
Publication statusPrint publication - Dec 2008
Externally publishedYes

Keywords

  • Bioaccessibility
  • Desorption
  • Phenanthrene
  • Supercritical fluid extraction

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