Method of diffusive gradients in thin films (DGT) compared with other soil testing methods to predict uranium phytoavailability

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Method of diffusive gradients in thin films (DGT) compared with other soil testing methods to predict uranium phytoavailability. / Vandenhove, Hildegarde; Antunes, Kenny; Wannijn, Jean; Duquène, Lise; Van Hees, May; Thiry, Yves (Peer reviewer).

In: Science of the Total Environment, Vol. 373, 01.2007, p. 542-555.

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@article{fbaf167053dd410792db37b1911e82f1,
title = "Method of diffusive gradients in thin films (DGT) compared with other soil testing methods to predict uranium phytoavailability",
abstract = "Measurement of diffusive gradients in thin films (DGT) was proposed as a surrogate for metal uptake by plants. A study was performed to test the predictive capacity of the DGT method with respect to uranium availability and uptake by ryegrass. Correlation analysis was performed to compare the results obtained with the DGT device with more conventional bioavailability indices. Six soils with different uranium contamination history and with distinct soil characteristics were used for the availability tests and the uptake experiment. The four uranium bioavailability indices screened were highly correlated, indicating that at least partially comparable uranium pools were assessed. The uranium concentration in the pore water was a better predictor for uranium uptake by ryegrass than amounts of uranium recovered following extraction with 0.11 M CH3COOH or 0.4 M MgCl2, the fractions considered exchangeable according to, respectively, the BCR or NIST standardized sequential extraction methods. The DGT measured concentration, was also highly correlated with plant uptake but the significance level was sensitive to the value of the diffusion coefficient (pH depend or not) used to calculate . From the results obtained it could not be concluded that the DGT method would have an additional value in assessing uranium bioavailability.",
keywords = "Uranium, Bioavailability, Soil tests, DGT, Ryegrass",
author = "Hildegarde Vandenhove and Kenny Antunes and Jean Wannijn and Lise Duqu{\`e}ne and {Van Hees}, May and Yves Thiry",
note = "Score = 10",
year = "2007",
month = jan,
doi = "10.1016/j.scitotenv.2006.12.023",
language = "English",
volume = "373",
pages = "542--555",
journal = "Science of the Total Environment",
issn = "0048-9697",
publisher = "Elsevier",

}

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TY - JOUR

T1 - Method of diffusive gradients in thin films (DGT) compared with other soil testing methods to predict uranium phytoavailability

AU - Vandenhove, Hildegarde

AU - Antunes, Kenny

AU - Wannijn, Jean

AU - Duquène, Lise

AU - Van Hees, May

A2 - Thiry, Yves

N1 - Score = 10

PY - 2007/1

Y1 - 2007/1

N2 - Measurement of diffusive gradients in thin films (DGT) was proposed as a surrogate for metal uptake by plants. A study was performed to test the predictive capacity of the DGT method with respect to uranium availability and uptake by ryegrass. Correlation analysis was performed to compare the results obtained with the DGT device with more conventional bioavailability indices. Six soils with different uranium contamination history and with distinct soil characteristics were used for the availability tests and the uptake experiment. The four uranium bioavailability indices screened were highly correlated, indicating that at least partially comparable uranium pools were assessed. The uranium concentration in the pore water was a better predictor for uranium uptake by ryegrass than amounts of uranium recovered following extraction with 0.11 M CH3COOH or 0.4 M MgCl2, the fractions considered exchangeable according to, respectively, the BCR or NIST standardized sequential extraction methods. The DGT measured concentration, was also highly correlated with plant uptake but the significance level was sensitive to the value of the diffusion coefficient (pH depend or not) used to calculate . From the results obtained it could not be concluded that the DGT method would have an additional value in assessing uranium bioavailability.

AB - Measurement of diffusive gradients in thin films (DGT) was proposed as a surrogate for metal uptake by plants. A study was performed to test the predictive capacity of the DGT method with respect to uranium availability and uptake by ryegrass. Correlation analysis was performed to compare the results obtained with the DGT device with more conventional bioavailability indices. Six soils with different uranium contamination history and with distinct soil characteristics were used for the availability tests and the uptake experiment. The four uranium bioavailability indices screened were highly correlated, indicating that at least partially comparable uranium pools were assessed. The uranium concentration in the pore water was a better predictor for uranium uptake by ryegrass than amounts of uranium recovered following extraction with 0.11 M CH3COOH or 0.4 M MgCl2, the fractions considered exchangeable according to, respectively, the BCR or NIST standardized sequential extraction methods. The DGT measured concentration, was also highly correlated with plant uptake but the significance level was sensitive to the value of the diffusion coefficient (pH depend or not) used to calculate . From the results obtained it could not be concluded that the DGT method would have an additional value in assessing uranium bioavailability.

KW - Uranium

KW - Bioavailability

KW - Soil tests

KW - DGT

KW - Ryegrass

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_78373

UR - http://knowledgecentre.sckcen.be/so2/bibref/4197

U2 - 10.1016/j.scitotenv.2006.12.023

DO - 10.1016/j.scitotenv.2006.12.023

M3 - Article

VL - 373

SP - 542

EP - 555

JO - Science of the Total Environment

JF - Science of the Total Environment

SN - 0048-9697

ER -

ID: 104617