Issue |
Radioprotection
Volume 40, May 2005
ECORAD 2004
|
|
---|---|---|
Page(s) | S329 - S334 | |
DOI | https://doi.org/10.1051/radiopro:2005s1-049 | |
Published online | 17 June 2005 |
Fate of long-lived radioactive halogens, (36Cl, 129I), in agricultural ecosystems: Field investigations
1
Laboratory of Radioecology and Ecotoxicology, Institute for Radioprotection and Nuclear Safety, DEI/SECRE/LRE, Cadarache, Bd. 186, BP. 3, 13115 St. Paul-lez-Durance Cedex, France
2
Ukrainian Institute of Agricultural Radiology (UIAR), Mashinostroiteley Str.7, Chabany,Kiev Region 08162, Ukraine
Field experiments in the Chernobyl exclusion zone have been carried out to determine the behaviour of the radioactive halogens 36Cl and 125I (as a surrogate for 129I) in the soil-plant system and along human food chains. The investigations on the migration in four types of soil of the two radionuclides showed that the vertical transport of chlorine was the most rapid: 9 months after the contamination the residual fractions of 36Cl in the 20 cm arable layer varied from 1% to 3% according to soil type. For iodine this percentage was less than 3% in any case. The soil to plant transfers were quantified for various agricultural crops (cereals, grass, root vegetables, leaves vegetables and fruit vegetables) and for several kinds of soils. The root uptake of 36Cl by plants was particularly important. As a result of this very high biological assimilation about 60% of the contamination was extracted from the soils by the plants after one vegetation period. For iodine the concentration ratios values are 2 or 3 order of magnitude lower than for chlorine.
© EDP Sciences, 2005
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.