Absorption of radiocaesium by sheep after ingestion of contaminated soils
Cooke, A.; Green, N.; Rimmer, D.; Weekes, T.; Wilkins, B.; Beresford, N.A.; Fenwick, J.. 1996 Absorption of radiocaesium by sheep after ingestion of contaminated soils. Science of the Total Environment, 192 (1). 21-29. 10.1016/0048-9697(96)05288-6Full text not available from this repository.
The absorption of 137Cs by sheep following ingestion of contaminated soil was studied using an established dual isotope method. Two agricultural soils were studied: an alluvial gley contaminated by discharges to the sea from the Sellafield Reprocessing Plant, and a lowland organic soil that had been artificially contaminated. Values of the true absorption coefficient of radiocaesium of 0.19 ± 0.03 and 0.03 ± 0.01, respectively, were obtained for these soils. This implies that availability of soil-associated radiocaesium for uptake following ingestion is up to about 20% of that when the activity is incorporated in vegetation. These results have been compared to estimates of availability made using an in-vitro approach described previously and found to be in good agreement. However, comparison with in-vitro data obtained for an upland peat indicated that absorption from some upland organic soils could be greater than from the lowland organic soil.
|Programmes:||CEH Programmes pre-2009 publications > Other|
|CEH Sections:||_ Pre-2000 sections|
|Additional Keywords:||radioecology, radiocaesium, absorption, soil ingestion, bioavailability|
|NORA Subject Terms:||Ecology and Environment|
|Date made live:||11 Jun 2012 09:04|
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