Please use this identifier to cite or link to this item:
|Scopus||Web of Science®||Altmetric|
|Title:||Transfer functions for solid-solution partitioning of cadmium for Australian soils|
|Author:||De Vries, W.|
|Citation:||Environmental Pollution, 2011; 159(12):3583-3594|
|Publisher:||Elsevier Sci Ltd|
|W. de Vries, M.J. McLaughlin, J.E. Groenenberg|
|Abstract:||To assess transport and ecotoxicological risks of metals, such as cadmium (Cd) in soils, models are needed for partitioning and speciation. We derived regression-based "partition-relations" based on adsorption and desorption experiments for main Australian soil types. First, batch adsorption experiments were carried out over a realistic range of dissolved Cd concentrations in agricultural soils in Australia. Results showed linear sorption relationships, implying the adequacy of using Kd values to describe partitioning. Desorption measurements were then carried out to assess in-situ Kd values and relate these to soil properties The best transfer functions for solid-solution partitioning were found for Kd values relating total dissolved Cd concentration to total soil Cd concentrations, accounting for the variation in pH, SOM contents and DOC concentrations. Model predictions compared well with measurements of an independent data set, but there was a tendency to underestimate dissolved Cd concentrations of highly polluted soils.|
|Keywords:||Cadmium; Transfer function; Adsorption; Partitioning; Pollution|
|Rights:||Copyright © 2011 Elsevier Ltd. All rights reserved.|
|Appears in Collections:||Agriculture, Food and Wine 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.