Can we predict uranium bioavailability based on soil parameters? Part 2: Soil solution uranium concentration is not a good bioavailability index.

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@article{fd5155557a464bf289f54aa705d7043e,
title = "Can we predict uranium bioavailability based on soil parameters? Part 2: Soil solution uranium concentration is not a good bioavailability index.",
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 238U. 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: UO22+, 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.",
keywords = "Uranium, Transfer factor, Speciation, Soil characteristics, Ryegrass",
author = "Hildegarde Vandenhove and {Van Hees}, May and Jean Wannijn and Kristien Wouters and Lian Wang and Yves Thiry",
note = "Score = 10",
year = "2007",
month = jan,
doi = "10.1016/j.envpol.2006.04.012",
language = "English",
volume = "145",
pages = "577--586",
journal = "Environmental Pollution",
issn = "0269-7491",
publisher = "Elsevier",

}

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TY - JOUR

T1 - Can we predict uranium bioavailability based on soil parameters? Part 2: Soil solution uranium concentration is not a good bioavailability index.

AU - Vandenhove, Hildegarde

AU - Van Hees, May

AU - Wannijn, Jean

AU - Wouters, Kristien

AU - Wang, Lian

A2 - Thiry, Yves

N1 - Score = 10

PY - 2007/1

Y1 - 2007/1

N2 - 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 238U. 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: UO22+, 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.

AB - 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 238U. 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: UO22+, 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.

KW - Uranium

KW - Transfer factor

KW - Speciation

KW - Soil characteristics

KW - Ryegrass

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_78381

UR - http://knowledgecentre.sckcen.be/so2/bibref/4199

U2 - 10.1016/j.envpol.2006.04.012

DO - 10.1016/j.envpol.2006.04.012

M3 - Article

VL - 145

SP - 577

EP - 586

JO - Environmental Pollution

JF - Environmental Pollution

SN - 0269-7491

ER -

ID: 85959