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Title: Can we predict uranium bioavailability based on soil parameters? Part 1: Effect of soil parameters on soil solution uranium concentration
Authors: Vandenhove, H.
Van Hees, M.
WOUTERS, Kristien
Wannijn, J.
Issue Date: 2007
Citation: ENVIRONMENTAL POLLUTION, 145(2). p. 587-595
Abstract: Present study aims to quantify the influence of soil parameters on soil solution uranium concentration for U-238 spiked soils. Eighteen soils collected under pasture were selected such that they covered a wide range for those parameters hypothesised as being potentially important in determining U sorption. Maximum soil solution uranium concentrations were observed at alkaline pH, high inorganic carbon content and low cation exchange capacity, organic matter content, clay content, amorphous Fe and phosphate levels. Except for the significant correlation between the solid-liquid distribution coefficients (K-d, L kg(-1)) and the organic matter content (R-2 = 0.70) and amorphous Fe content (R-2 = 0.63), there was no single soil parameter significantly explaining the soil solution uranium concentration (which varied 100-fold). Above pH = 6, log(K-d) was linearly related with pH [log(K-d) = -1.18 pH + 10.8, R-2 = 0.65]. Multiple linear regression analysis did result in improved predictions of the soil solution uranium concentration but the model was complex. (c) 2006 Elsevier Ltd. All rights reserved.
Notes: Belgian Nucl Res Ctr, Dept Radiat Protect Res, Radioecol Sect, B-2400 Mol, Belgium. Hasselt Univ, Ctr Stat, B-3590 Diepenbeek, Belgium.Vandenhove, H, Belgian Nucl Res Ctr, Dept Radiat Protect Res, Radioecol Sect, Boeretang 200, B-2400 Mol, Belgium.hvandenh@sckcen.be
URI: http://hdl.handle.net/1942/3996
DOI: 10.1016/j.envpol.2006.04.011
ISI #: 000243247100025
ISSN: 0269-7491
Category: A1
Type: Journal Contribution
Validation: ecoom, 2008
Appears in Collections: Research publications

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