Document Server@UHasselt >
Research >
Research publications >

Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/3999

Title: Can we predict uranium bioavailability based on soil parameters? Part 2: Soil solution uranium concentration is not a good bioavailability index
Authors: Vandenhove, H.
Van Hees, M.
Wannijn, J.
WOUTERS, Kristien
Wang, L.
Issue Date: 2007
Citation: ENVIRONMENTAL POLLUTION, 145(2). p. 577-586
Abstract: The present study aimed to quantify the influence of soil parameters on uranium uptake by ryegrass. Ryegrass was established on eighteen distinct soils, spiked with U-238. Uranium soil-to-plant transfer factors (TF) ranged from 0.0003 to 0.0340 kg kg(-1). There was no significant relation between the U soil-to-plant transfer (or total U uptake or flux) and the uranium concentration in the soil solution or any other soil factor measured, nor with the U recovered following selective soil extractions. Multiple linear regression analysis resulted in a significant though complex model explaining up to 99% of variation in TF. The influence of uranium speciation on uranium uptake observed was featured: UO2+2, uranyl carbonate complexes and UO2PO4- seem the U species being preferentially taken up by the roots and transferred to the shoots. Improved correlations were obtained when relating the uranium TF with the summed soil solution concentrations of mentioned uranium species. (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. Belgian Nucl Res Ctr, Dept Waste & Disposal, B-2400 Mol, 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/1942/3999
DOI: 10.1016/j.envpol.2006.04.012
ISI #: 000243247100024
ISSN: 0269-7491
Category: A1
Type: Journal Contribution
Validation: ecoom, 2008
Appears in Collections: Research 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.