Fluxes of radiocaesium in selected rural study sites in Russia and Ukraine.
Food production and food harvesting systems common in the areas contaminated by the Chernobyl accident in Russia and Ukraine can be grouped into three major categories : collective farm produce, private farming produce and foods collected from natural ecosystems.
The contribution of each of these sources to radiocaesium intake by people living in rural settlements in the mid 1990s has been estimated at two major study sites, one in each country.
The collective farm system provided the smallest contribution (7-14%) to the intake of radiocaesium at both sites.
Natural food was the major contributor to intake at the Russian site (83%). Whereas private farm produce was the major contributor (68%) at the Ukrainian study site.
The difference between the two sites was mainly because private milk production was stopped at the Russian site due to the contamination in 1986.
A retrospective assessment of the situation 1 year after the accident shows that collective farming could have been a minor contributor to radiocaesium intake (8%), whilst private farming would have been the major contributor wherever private milk production and consumption continued.
The extent to which inhabitants consume natural foods from forests has a considerable effect on their radiocaesium intake.
The comparative importance of food products from natural ecosystems increases with time due to the long effective ecological half-lives of radiocaesium in unimproved pastures and forests. (...)
Mots-clés Pascal : Césium, Produit radioactif, Radioisotope, Radiocontamination, Contamination, Récolte, Milieu rural, Aliment, Evaluation, Exposition, Homme, Russie, Eurasie, Ukraine, Europe Est, Europe, Tchernobyl
Mots-clés Pascal anglais : Cesium, Radioactive product, Radioisotope, Radioactive contamination, Contamination, Harvesting, Rural environment, Food, Evaluation, Exposure, Human, Russia, Eurasia, Ukraine, Eastern Europe, Europe
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 99-0474596
Code Inist : 002A08F03. Création : 22/03/2000.