Research article - Peer-reviewed, 2007
Partitioning of chloroaromatic compounds between the aqueous phase and dissolved and particulate soil organic matter at chlorophenol contaminated sites
Frankki S, Persson Y, Shchukarev A, Tysklind M, Skyllberg UAbstract
The retention and mobility of hydrophobic organic contaminants (HOCs) in soil is mainly determined by hydrophobic partitioning to dissolved and particulate organic matter (DOM and POM, respectively). The aqueous phase, DOM, and POM fractions were extracted and separated from soils at three sites contaminated with technical chlorophenol formulations. Concentrations of chlorophenols (CP), polychlorinated phenoxyphenols (PCPP), polychlorinated diphenyl ethers (PCDE) and polychlorinated dibenzo-p-dioxins and furans (PCDD/F) were determined. The partitioning to POM, in relation to DOM, increased in all three soils with increasing hydrophobicity in the order CP < PCPP similar to PCDE similar to PCDF < PCDD. Differences in partitioning to DOM (log K-DOC) and POM (log K-POC) could not be explained by differences in gross organic C chemistry. Black carbon did not contribute significantly to the sorption of PCDDs, whereas >70% wood fibre in one soil resulted in a decrease of log K-POC of 0.5 units for CPs and PCDDs. We conclude that log K-OC for both DOM and POM need to be explicitly determined when the retention and mobility of HOCs is described and modelled in soils. (C) 2006 Elsevier Ltd. All rights reservedPublished in
Environmental Pollution2007, volume: 148, number: 1, pages: 182-190
Publisher: ELSEVIER SCI LTD
Authors' information
Frankki, Sofia
Swedish University of Agricultural Sciences, Department of Forest Ecology and Management
Swedish University of Agricultural Sciences, Department of Forest Ecology and Management
Shchukarev, Andrei
Tysklind, Mats
Persson, Ylva
UKÄ Subject classification
Environmental Sciences related to Agriculture and Land-use
Publication Identifiers
DOI: https://doi.org/10.1016/j.envpol.2006.10.029
URI (permanent link to this page)
https://res.slu.se/id/publ/15406