Please use this identifier to cite or link to this item:
Scopus Web of ScienceĀ® Altmetric
Type: Journal article
Title: The effect of solvent-conditioning on soil organic matter sorption affinity for diuron and phenanthrene
Author: Ahangar, A.
Smernik, R.
Kookana, R.
Chittleborough, D.
Citation: Chemosphere, 2009; 76(8):1062-1066
Publisher: Pergamon-Elsevier Science Ltd
Issue Date: 2009
ISSN: 0045-6535
Statement of
Ahmad Gholamalizadeh Ahangar, Ronald J. Smernik, Rai S. Kookana, David J. Chittleborough
Abstract: The effect of solvent-conditioning on the sorption of diuron and phenanthrene was investigated. The organic carbon-normalized sorption coefficients (K(OC)) for diuron and phenanthrene (determined from single initial concentrations of 0.8mgL(-1) and 1.5mgL(-1), respectively) were consistently higher following solvent-conditioning of a whole soil with five organic solvents (acetonitrile, acetone, methanol, chloroform and dichloromethane). The relative increase in K(OC) was inversely related to the polarity of the conditioning solvent (i.e. greater increases in K(OC) were observed for the least polar solvents: chloroform and dichloromethane). The effect of solvent-conditioning on the sorption properties of the same soil that had been lipid-extracted using accelerated solvent extraction (ASE) was also investigated. Since lipid extraction involves treatment with a non-polar solvent (95:5 dichloromethane:methanol) one may have expected no further increase in K(OC) on solvent-conditioning. On the contrary, the lipid-extracted soil exhibited very similar increases in K(OC) as the whole soil. This demonstrated that lipid removal and solvent-conditioning, which both increased K(OC) for this soil, are quite separate phenomena.
Keywords: Sorption
Conditioning effect
DOI: 10.1016/j.chemosphere.2009.04.027
Published version:
Appears in Collections:Aurora harvest
Earth and Environmental Sciences publications
Environment Institute publications

Files in This Item:
There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.