Sorption of Lipophilic Organic Compounds to Wood and Implications for Their Environmental Fate
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- 作者：Stefan Trapp ; Karina S. B. Miglioranza ; and Hans Mosbæ ; k
- 刊名：Environmental Science & Technology
- 出版年：2001
- 出版时间：April 15, 2001
- 年：2001
- 卷：35
- 期：8
- 页码：1561 - 1566
- 全文大小：86K
- 年卷期：v.35,no.8(April 15, 2001)
- ISSN：1520-5851
文摘
The sorption from water to wood (KB>Wood) of 10 organicchemicals (log KOW, 1.48-6.20) was experimentally determinedfor 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 logKWood = -0.28 (± 0.40) + 0.668 (± 0.103)log KOW for willow(r = 0.79, n = 27). According to an equilibrium-partitioningmodel, wood should be an important storage compartmentfor lipophilic environmental chemicals, but this is contraryto analytical results. Diffusive uptake from air into woodwas estimated to be a relevant transport process only forchemicals with a high KAW. Uptake of chemicals fromsoil via xylem into stem was simulated with a dynamic one-compartment model. This pathway seems to be importantfor chemicals with low and intermediate lipophilicity. Inlarge trees, the chemicals are retained for a long time. Ifmetabolism inside the stem occurs, wood can serve asa "safe sink" for environmental chemicals. This might beof use in phytoremediation.