In:
Israel Journal of Chemistry, Wiley, Vol. 42, No. 1 ( 2002-11), p. 67-75
Abstract:
Nonlinear sorption of hydrophobic organic pollutants in soils and sediments can be described by a combination of partitioning and adsorption (pore‐filling) mechanisms. Both the partitioning and the pore‐filling models plot sorptive uptake vs. solubility‐normalized aqueous concentrations, which yields “collapsing” sorption isotherms for similar compounds. With this new concept, sorption of a variety of similar compounds could be predicted based on measured data of one probe chemical. The solubility‐normalized Freundlich model predicts an inverse linear relationship between the sorption coefficient measured at a given relative concentration vs. solubility, S , which is demonstrated for 3 partitioning dominated samples from Bangladesh (soil, aquifer sediment, peat) and 4 compounds (carbofuran, trichloroethene, 1,2‐dichlorobenzene, phenanthrene) as well as for 2 activated carbons (F300, F400), and a wide variety of compounds (literature data). Future research will focus on the improvement of prediction of sorption in soils and sediments by including other normalization parameters, such as molar volume, polarizability, etc., in addition to the water solubility.
Type of Medium:
Online Resource
ISSN:
0021-2148
,
1869-5868
DOI:
10.1560/MFG5-1NET-Q0VM-8W2H
Language:
English
Publisher:
Wiley
Publication Date:
2002
detail.hit.zdb_id:
2066481-3
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