PMID: 16646451May 2, 2006Paper

Freely dissolved pore water concentrations and sorption coefficients of PAHs in spiked, aged, and field-contaminated soils

Environmental Science & Technology
Thomas L ter LaakJoop L M Hermens

Abstract

Freely dissolved aqueous concentrations in the soil pore water represent an important aspect of bioavailability and risk assessment of contaminated soils. In this study, a negligible depletive partitioning based sampling technique was validated and applied to measure free concentrations of polycyclic aromatic hydrocarbons (PAHs) in spiked, aged and field-contaminated soils. Detailed kinetic studies were performed to select appropriate equilibration times. Freely dissolved aqueous concentrations in the pore water were compared to total concentrations, and sorption coefficients were calculated. Results show that equilibrium partition models can predict sorption coefficients of freshly spiked and lab-aged soils rather accurately. However, freely dissolved pore water concentrations of field-contaminated soils are orders of magnitude lower than model predictions. Consequently, environmental risks can be highly overestimated with these models. The simple and sensitive partitioning-based sampling technique used in this study, could, therefore, be applicable to improve site-specific risk assessment of field-contaminated soils.

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Citations

Jul 1, 2010·Environmental Science & Technology·Hongbo Zhu, Michael D Aitken
Jan 23, 2014·Journal of Hazardous Materials·Klára Šmídová, Jakub Hofman
Aug 8, 2012·Bulletin of Environmental Contamination and Toxicology·J JefimovaU Kirso
Feb 26, 2016·Environmental Science and Pollution Research International·Michał KołtowskiPatryk Oleszczuk
Oct 16, 2012·Analytica Chimica Acta·Suresh Seethapathy, Tadeusz Górecki
Jul 7, 2012·Environmental Toxicology and Chemistry·Yuping DingMichael J Lydy
Feb 1, 2013·Environmental Toxicology and Chemistry·Janet CermakD George Dixon
Jul 9, 2013·Environmental Toxicology and Chemistry·Monique M PerronKelly G Pennell
Oct 22, 2013·Integrated Environmental Assessment and Management·Thomas F Parkerton, Keith A Maruya
Dec 7, 2013·Integrated Environmental Assessment and Management·Michael J LydyJingfu Liu
Feb 14, 2016·Environmental Toxicology and Chemistry·Joris J-H HaftkaJoop L M Hermens
Apr 7, 2017·The Science of the Total Environment·Lucie BielskáSebastian Höss
Feb 23, 2019·Environmental Science and Pollution Research International·Fang WangZhong-Liang Wang
Jul 18, 2017·Environmental Science and Pollution Research International·Sharon E HartzellLance T Yonkos
Jun 24, 2019·Archives of Toxicology·Luise HennebergerBeate I Escher
May 21, 2009·Environmental Science & Technology·Stéphane BayenJoop L M Hermens
Jul 17, 2009·Environmental Science & Technology·Barry Muijs, Michiel T O Jonker
Oct 24, 2009·Environmental Science & Technology·Thomas L Ter LaakJoop L M Hermens
Apr 17, 2009·Environmental Science & Technology·Yu YangJay Gan

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