Sorption of lipophilic organic compunds to wood and implications for their environmental fate

Stefan Trapp, S.B. Miglioranza, Hans Mosbæk

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The sorption from water to wood (KWood) of 10 organic chemicals (logKOW, 1.48-6.20) was experimentally determined for oak (Quercus robur) and basket willow (Salix viminalis). Linear regression yielded log KWood ) -0.27 (( 0.25) + 0.632 (( 0.063)log KOW for oak (r ) 0.90, n ) 27) and log KWood ) -0.28 (( 0.40) + 0.668 (( 0.103)log KOW for willow (r ) 0.79, n ) 27). According to an equilibrium-partitioning model, wood should be an important storage compartment for lipophilic environmental chemicals, but this is contrary to analytical results. Diffusive uptake from air into wood was estimated to be a relevant transport process only for chemicals with a high KAW. Uptake of chemicals from soil via xylem into stem was simulated with a dynamic onecompartment model. This pathway seems to be important for chemicals with low and intermediate lipophilicity. In large trees, the chemicals are retained for a long time. If metabolism inside the stem occurs, wood can serve as a “safe sink” for environmental chemicals. This might be of use in phytoremediation.
Original languageEnglish
Book seriesEnvironmental Science and Technology
Volume35
Issue number8
Pages (from-to)1561-1566
ISSN1382-3124
DOIs
Publication statusPublished - 2001

Keywords

  • ACCUMULATION
  • CHEMICALS
  • HYBRID POPLAR TREES
  • TRANSLOCATION
  • VEGETATION

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