Assimilation of Hydrophobic Chlorinated Organics in Freshwater Wetlands: Sorption and Sediment-Water Exchange
Document Type
Article
Publication Date
1-1-1993
Abstract
In laboratory studies, sorption of hexachlorobenzene (HCB) in wetland soil and floodwater was strongly influenced by high levels of naturally-occurring dissolved organic carbon (DOC). Organic matter-dominated wetlands (e.g., marshes) containing high concentrations of DOC demonstrated no advantage over mineral-dominated wetlands (e.g., bottomland hardwood forests) for sorption of HCB due to partitioning in this DOC phase. Sorption of HCB was described adequately using a three-phase model that included the DOC phase. However, partition coefficients in the bottomland hardwood soil were time-dependent. This time-dependent phenomena was not observed in the freshwater marsh soil. Sorptive assimilation of organic compounds in wetlands appears to be dependent on the unique hydrological conditions that promote sediment-water exchange and accretion rather than any enhanced sorptive ability of wetland soils themselves. © 1993, American Chemical Society. All rights reserved.
Publication Source (Journal or Book title)
Environmental Science and Technology
First Page
875
Last Page
882
Recommended Citation
Pardue, J., Masscheleyn, P., DeLaune, R., Patrick, W., & Adrian, D. (1993). Assimilation of Hydrophobic Chlorinated Organics in Freshwater Wetlands: Sorption and Sediment-Water Exchange. Environmental Science and Technology, 27 (5), 875-882. https://doi.org/10.1021/es00042a009