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Title: Preferential sorption of planar contaminants in sediments from Lake Ketelmeer, The Netherlands

Abstract

Organic carbon normalized sediment-water distribution coefficients (K{sub oc}) of a series of in situ and added chlorobenzenes, PCBs, and PAHs were determined in an aged and a more recently deposited sediment layer from Lake Ketelmeer, The Netherlands, using the cosolvent method. The resulting log K{sub oc}'s for both in situ and added compounds are rather high compared to literature data with the ones in the recently deposited layer being generally higher than those in the aged layer. The results do not show the well-established effects due to increased contact time of contaminants with sediments and indicate that after only short equilibrium times K{sub oc}'s can even be higher than after several decades of contact time in the field. In addition, distribution coefficients show a remarkable dependence on sorbate planarity, manifested by significantly different log K{sub oc}-log K{sub ow} relationships for planar (chlorobenzenes, PAHs, and mono-ortho-substituted PCBs) and nonplanar (multiple-ortho-substituted PCBs) contaminants in both sediment layers. The confirmed presence of sootlike material for which planar aromatic compounds probably have strong affinity is brought up to explain these observations. Differences in K{sub oc}'s between both layers are discussed in relation to contact time and analyzed soot fractions.

Authors:
;
Publication Date:
Research Org.:
National Inst. for Coastal and Marine Management, Haren (NL)
OSTI Identifier:
20080502
Resource Type:
Journal Article
Journal Name:
Environmental Science and Technology
Additional Journal Information:
Journal Volume: 34; Journal Issue: 9; Other Information: PBD: 1 May 2000; Journal ID: ISSN 0013-936X
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; WATER POLLUTION; SEDIMENTS; SORPTION; NETHERLANDS; CHLORINATED AROMATIC HYDROCARBONS; POLYCYCLIC AROMATIC HYDROCARBONS; MONITORING

Citation Formats

Jonker, M.T.O., and Smedes, F. Preferential sorption of planar contaminants in sediments from Lake Ketelmeer, The Netherlands. United States: N. p., 2000. Web. doi:10.1021/es9906251.
Jonker, M.T.O., & Smedes, F. Preferential sorption of planar contaminants in sediments from Lake Ketelmeer, The Netherlands. United States. doi:10.1021/es9906251.
Jonker, M.T.O., and Smedes, F. Mon . "Preferential sorption of planar contaminants in sediments from Lake Ketelmeer, The Netherlands". United States. doi:10.1021/es9906251.
@article{osti_20080502,
title = {Preferential sorption of planar contaminants in sediments from Lake Ketelmeer, The Netherlands},
author = {Jonker, M.T.O. and Smedes, F.},
abstractNote = {Organic carbon normalized sediment-water distribution coefficients (K{sub oc}) of a series of in situ and added chlorobenzenes, PCBs, and PAHs were determined in an aged and a more recently deposited sediment layer from Lake Ketelmeer, The Netherlands, using the cosolvent method. The resulting log K{sub oc}'s for both in situ and added compounds are rather high compared to literature data with the ones in the recently deposited layer being generally higher than those in the aged layer. The results do not show the well-established effects due to increased contact time of contaminants with sediments and indicate that after only short equilibrium times K{sub oc}'s can even be higher than after several decades of contact time in the field. In addition, distribution coefficients show a remarkable dependence on sorbate planarity, manifested by significantly different log K{sub oc}-log K{sub ow} relationships for planar (chlorobenzenes, PAHs, and mono-ortho-substituted PCBs) and nonplanar (multiple-ortho-substituted PCBs) contaminants in both sediment layers. The confirmed presence of sootlike material for which planar aromatic compounds probably have strong affinity is brought up to explain these observations. Differences in K{sub oc}'s between both layers are discussed in relation to contact time and analyzed soot fractions.},
doi = {10.1021/es9906251},
journal = {Environmental Science and Technology},
issn = {0013-936X},
number = 9,
volume = 34,
place = {United States},
year = {2000},
month = {5}
}