Volume 44, Number 5, 2009ECORAD 2008 - Radioecology and Environmental Radioactivity
|Page(s)||791 - 798|
|Published online||06 June 2009|
Role and uncertainty of foliar transfer in radiological impact assessments: State of the art and future actions
IRSN/DEI/SECRE, BP. 3, 13115 St. Paul-lez-Durance Cedex, France
2 ANDRA/DS-TR, French Agency for Radioactive Waste Management, Parc de la Croix Blanche, 1 rue Jean Monnet, Châtenay-Malabry Cedex, France
Sensitivity analyses have shown major role of foliar transfer for many radionuclides in the context of radiological impact assessments. A review of the published literature about foliar transfer focusing on translocation factors was carried out in order to constitute an updated database on one hand and to use the appropriate existing values of translocation parameters for modeling on the other. Translocation describes the distribution of radionuclides within the plant after foliar deposition and radionuclide absorption onto the surface of leaves. It mainly depends on elements and the plant growth stage. The collected data was derived from both in-field and greenhouse experiments. It was analysed to select those coming from a contamination simulating sprinkling irrigation or rain.
This work not only allowed us to carry out a diagnosis on the values themselves but also enabled us to ascertain missing data needs. In order to compensate for the lack of data on important radionuclides concerning radioactive waste (129I, 36Cl, 79Se), experimental studies have been launched.
© EDP Sciences, 2009
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