Journal
ENVIRONMENTAL POLLUTION
Volume 156, Issue 3, Pages 1053-1060Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2008.04.020
Keywords
Sorption; Polar compounds; Nonpolar compounds; Soil organic matter; Black carbon
Categories
Funding
- China National Science Foundation [20637030, 20777031]
- Jiangsu Province Science Foundation [BK20061213]
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Improved predictions on the fate of organic pollutants in surface environments require a better understanding of the underlying sorption mechanisms that control their uptake by soils In this study, we monitored sorption of nine aromatic compounds with varying physicochemical properties (hydrophobicity, electron-donor/acceptor ability and polarity), including two polycyclic aromatic hydrocarbons, two chlorobenzenes, two nitroaromatic compounds, dichlobenil, carbaryl and 2,4-dichlorophenol in aqueous suspension of four surface soils of eastern China. The tested Soils were characterized with respect to organic carbon (OC) content, black carbon content, mineralogy, morphology and size fraction to assess the role of the diverse soil characteristics in sorption. The results of this study show that not only the solute hydrophobicity and the OC content of soil are important to the retention of organic pollutants, but also the solute molecular structure and the soil nature. (C) 2008 Elsevier Ltd. All rights reserved.
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