[Cesium transfer in short food chains].
An investigation of 25,000 samples of foodstuffs and feedstuffs in Czechoslovakia, contaminated by fall-out cesium after the accident in the Chernobyl nuclear power plant, performed from May 5, 1986 to March 31, 1988, revealed that both the values of cesium transfer-factors in food--animal tissues--milk transitions and the values of biological half-life of cesium are functions of internal and external conditions of contamination. Organism individuality as the main internal condition causes the variance of about +/- 50% of the mean value of the respective transfer-factor. Through the external conditions, mainly the environmental contamination level, type of ingested food and time of ingestion, the mean values of transfer-factors are influenced up to 500%, e.g. to the value of 0.5. But this value converges with growing up contamination of food and environment to the limit of 0.3. The first two to three biological half-lives after the last ingestion of contaminated food are up to ten-times shorter than those at stabilized state.
Procházka
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Výzkumný ústav veterinárního lékarství, Brno.
Brunclík
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Jandl
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Jirásek
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V
Novosad
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J
Hampl
J
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D000059:Accidents; D000818:Animals; D002417:Cattle; D002586:Cesium / Q000032:analysis*; D003604:Czechoslovakia; D005507:Food Contamination, Radioactive / Q000032:analysis*; D008460:Meat / Q000032:analysis*; D008892:Milk / Q000032:analysis*; D009688:Nuclear Reactors; D011817:Rabbits; D014455:Ukraine
D002586:Cesium
Prechody cesia v krátkých potravních retĕzcich.