Effect of soil K-status and bentonite additions on radiocaesium transfer

Hildegarde Vandenhove; Adrien Cremers; Erik Smolders

doi:10.1051/radiopro/2002050

Effect of soil K-status and bentonite additions on radiocaesium transfer

Hildegarde Vandenhove, Adrien Cremers, Erik Smolders

Research output › peer-review

Abstract

The influence of bentonite additions and soil K status on radiocaesium transfer to ryegrass was investigated in a potted soil experiment. A sandy soil was contaminated with 134Cs and amended with K salts (0-97 mM kg-1) and K bentonite (0-2 %). After 4 weeks incubation of the mixtures, ryegrass was grown for 18 weeks and trimmed at 7 occasions. During subsequent harvests, the radiocaesium transfer factor (TF) decreased up to 2.7 fold in soils amended with more than 0.25 % bentonite whereas they increased 3.0 to 14.4 fold in unamended soils or at the lowest bentonite application (0.25 %). Different trends are related to the formation of specific sorption sites and the depletion in soil K which was more pronounced in soils with

Original language	English
Title of host publication	Radiation Protection Colloques
Subtitle of host publication	ECORAD 2001: The Radioecology - Ecotoxicology of Continental and Estuatine Environments
Publisher	EDP Sciences
Pages	265-270
Number of pages	6
Volume	37
DOIs	https://doi.org/10.1051/radiopro/2002050
State	Published - 2002

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Cite this

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title = "Effect of soil K-status and bentonite additions on radiocaesium transfer",

abstract = "The influence of bentonite additions and soil K status on radiocaesium transfer to ryegrass was investigated in a potted soil experiment. A sandy soil was contaminated with 134Cs and amended with K salts (0-97 mM kg-1) and K bentonite (0-2 %). After 4 weeks incubation of the mixtures, ryegrass was grown for 18 weeks and trimmed at 7 occasions. During subsequent harvests, the radiocaesium transfer factor (TF) decreased up to 2.7 fold in soils amended with more than 0.25 % bentonite whereas they increased 3.0 to 14.4 fold in unamended soils or at the lowest bentonite application (0.25 %). Different trends are related to the formation of specific sorption sites and the depletion in soil K which was more pronounced in soils with",

keywords = "Radioacesium, Potassium, Bentonites, Modified bentonites, Fixation, Soil-plant transfer",

author = "Hildegarde Vandenhove and Adrien Cremers and Erik Smolders",

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T1 - Effect of soil K-status and bentonite additions on radiocaesium transfer

AU - Vandenhove, Hildegarde

AU - Cremers, Adrien

AU - Smolders, Erik

PY - 2002

Y1 - 2002

N2 - The influence of bentonite additions and soil K status on radiocaesium transfer to ryegrass was investigated in a potted soil experiment. A sandy soil was contaminated with 134Cs and amended with K salts (0-97 mM kg-1) and K bentonite (0-2 %). After 4 weeks incubation of the mixtures, ryegrass was grown for 18 weeks and trimmed at 7 occasions. During subsequent harvests, the radiocaesium transfer factor (TF) decreased up to 2.7 fold in soils amended with more than 0.25 % bentonite whereas they increased 3.0 to 14.4 fold in unamended soils or at the lowest bentonite application (0.25 %). Different trends are related to the formation of specific sorption sites and the depletion in soil K which was more pronounced in soils with

AB - The influence of bentonite additions and soil K status on radiocaesium transfer to ryegrass was investigated in a potted soil experiment. A sandy soil was contaminated with 134Cs and amended with K salts (0-97 mM kg-1) and K bentonite (0-2 %). After 4 weeks incubation of the mixtures, ryegrass was grown for 18 weeks and trimmed at 7 occasions. During subsequent harvests, the radiocaesium transfer factor (TF) decreased up to 2.7 fold in soils amended with more than 0.25 % bentonite whereas they increased 3.0 to 14.4 fold in unamended soils or at the lowest bentonite application (0.25 %). Different trends are related to the formation of specific sorption sites and the depletion in soil K which was more pronounced in soils with

KW - Radioacesium

KW - Potassium

KW - Bentonites

KW - Modified bentonites

KW - Fixation

KW - Soil-plant transfer

U2 - 10.1051/radiopro/2002050

DO - 10.1051/radiopro/2002050

M3 - In-proceedings paper

VL - 37

SP - 265

EP - 270

BT - Radiation Protection Colloques

PB - EDP Sciences

ER -