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Title: Transfer of sup 137 Cs to milk and meat in Hungary from Chernobyl fallout with comparisons of worldwide fallout in the 1960s

Abstract

Transfer coefficients for 137Cs from the Chernobyl accident were determined for milk (Fm) and meat (Ff) of cows and sheep in Hungary. Fm and Ff for both cows and sheep fed forage harvested within 1 mo of the accident were lower than results reported for worldwide fallout from weapons tests. Forage harvested 60 d or later after the accident produced an Fm similar to results from feeding soluble 134Cs. The results are interpreted to indicate three distinct categories of Fm about 2.0 X 10(-3), 4.0 X 10(-3) and 1.4 X 10(-2) d L-1, respectively, for Chernobyl fallout, worldwide fallout and soluble Cs isotopes or 137Cs contained in plants from soil uptake.

Authors:
; ; ; ;  [1]
  1. (Colorado State Univ., Fort Collins (USA))
Publication Date:
OSTI Identifier:
5257584
Resource Type:
Journal Article
Resource Relation:
Journal Name: Health Physics; (USA); Journal Volume: 57:4
Country of Publication:
United States
Language:
English
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; CESIUM 137; UPTAKE; FOOD CHAINS; CONTAMINATION; HUNGARY; FALLOUT; CATTLE; CESIUM 134; CHERNOBYLSK-4 REACTOR; COMPARATIVE EVALUATIONS; FORAGE; GLOBAL FALLOUT; MEAT; MILK; REACTOR ACCIDENTS; SHEEP; SOILS; UKRAINIAN SSR; ACCIDENTS; ALKALI METAL ISOTOPES; ANIMAL FEEDS; ANIMALS; ASIA; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BIOLOGICAL MATERIALS; BODY FLUIDS; CESIUM ISOTOPES; DEVELOPING COUNTRIES; DOMESTIC ANIMALS; EASTERN EUROPE; ENRICHED URANIUM REACTORS; EUROPE; FOOD; GRAPHITE MODERATED REACTORS; HOURS LIVING RADIOISOTOPES; INTERNAL CONVERSION RADIOISOTOPES; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; LWGR TYPE REACTORS; MAMMALS; MATERIALS; NUCLEI; ODD-EVEN NUCLEI; ODD-ODD NUCLEI; POWER REACTORS; RADIOISOTOPES; REACTORS; RUMINANTS; THERMAL REACTORS; USSR; VERTEBRATES; WATER COOLED REACTORS; YEARS LIVING RADIOISOTOPES; 560162* - Radionuclide Effects, Kinetics, & Toxicology- Animals, Plants, Microorganisms, & Cells

Citation Formats

Ward, G.M., Keszthelyi, Z., Kanyar, B., Kralovanszky, U.P., and Johnson, J.E. Transfer of sup 137 Cs to milk and meat in Hungary from Chernobyl fallout with comparisons of worldwide fallout in the 1960s. United States: N. p., 1989. Web. doi:10.1097/00004032-198910000-00010.
Ward, G.M., Keszthelyi, Z., Kanyar, B., Kralovanszky, U.P., & Johnson, J.E. Transfer of sup 137 Cs to milk and meat in Hungary from Chernobyl fallout with comparisons of worldwide fallout in the 1960s. United States. doi:10.1097/00004032-198910000-00010.
Ward, G.M., Keszthelyi, Z., Kanyar, B., Kralovanszky, U.P., and Johnson, J.E. Sun . "Transfer of sup 137 Cs to milk and meat in Hungary from Chernobyl fallout with comparisons of worldwide fallout in the 1960s". United States. doi:10.1097/00004032-198910000-00010.
@article{osti_5257584,
title = {Transfer of sup 137 Cs to milk and meat in Hungary from Chernobyl fallout with comparisons of worldwide fallout in the 1960s},
author = {Ward, G.M. and Keszthelyi, Z. and Kanyar, B. and Kralovanszky, U.P. and Johnson, J.E.},
abstractNote = {Transfer coefficients for 137Cs from the Chernobyl accident were determined for milk (Fm) and meat (Ff) of cows and sheep in Hungary. Fm and Ff for both cows and sheep fed forage harvested within 1 mo of the accident were lower than results reported for worldwide fallout from weapons tests. Forage harvested 60 d or later after the accident produced an Fm similar to results from feeding soluble 134Cs. The results are interpreted to indicate three distinct categories of Fm about 2.0 X 10(-3), 4.0 X 10(-3) and 1.4 X 10(-2) d L-1, respectively, for Chernobyl fallout, worldwide fallout and soluble Cs isotopes or 137Cs contained in plants from soil uptake.},
doi = {10.1097/00004032-198910000-00010},
journal = {Health Physics; (USA)},
number = ,
volume = 57:4,
place = {United States},
year = {Sun Oct 01 00:00:00 EDT 1989},
month = {Sun Oct 01 00:00:00 EDT 1989}
}
  • A experiment was conducted to study kinetics, transfer coefficients, and biological half-lives of {sup 90}Sr, {sup 134}Cs, and {sup 137}Cs from feed to milk. A cow was fed a diet containing alfalfa hay contaminated by Chernobyl fallout for 14.5 wk. The time-dependent activity in milk was approximated by a two-compartment model with fast biological half-lives of 2, 0.9, and 1 d and slow biological half-lives of 36.9, 8.7, and 12.4 d for {sup 90}Sr, {sup 134}Cs, and {sup 137}Cs respectively. The transfer coefficients determined in the experiment were 0.0008 d L{sup -1} for {sup 90}Sr, 0.0029 d L{sup -1} formore » {sup 137}Cs, and 0.0031 d L{sup -1} for {sup 137}Cs. The biological elimination phases of {sup 134}Cs and {sup 137}Cs were described by a two-compartment model while a one-compartment model was proposed for {sup 90}Sr. 18 refs., 4 figs., 2 tabs.« less
  • Following the Chernobyl accident in April 1986, the transfer of {sup 131}I and {sup 137}Cs from feed to milk was studied under experimental and common agricultural conditions. From measurements in different dairy farms in Southern Bavaria, equilibrium transfer coefficients for cow's milk were calculated to be 0.003 d L-1 (range 0.0015 to 0.005) for {sup 131}I and 0.003 d L-1 (range 0.0025 to 0.004) for {sup 137}Cs. In feeding experiments with cows and sheep under more controlled conditions, milk transfer coefficients of 0.007 d L-1 (range 0.0055 to 0.0081) for {sup 131}I and 0.003 d L-1 (range 0.0023 to 0.0053)more » for {sup 137}Cs were obtained for cows, while for sheep the {sup 137}Cs transfer coefficient was higher: 0.06 d L-1. The kinetics of the Cs transfer from fodder to cow's milk can be described by two exponential terms assuming biological half-lives in milk of 1-2 d and 10-20 d. The use of a fast component with 1.5 d and a fraction of 0.8, and a slow component with 15 d, gives a good approximation to the kinetics for all cows in this experiment.« less
  • The level of radiation exposure in children in Belarus caused by the Chernobyl accident was investigated on the basis of whole body {sup 137}Cs count. The subjects were 10,062 children (4,762 boys and 5,300 girls) in Mogilev and Gomel, Belarus, who received Chernobyl Sasakawa Health and Medical Cooperation Project health examinations from May 1991 to December 1992 and who were 5-16 y old at the time of examination. The median whole body {sup 137}Cs count per body weight varied from 21-48 Bq kg{sup {minus}1} and from 28-126 Bq kg{sup {minus}1} in Mogilev oblast and Gomel oblast, respectively. (The {open_quotes}oblast{close_quotes} ismore » the largest administrative district constituting the country. Belarus consists of 6 oblasts). Corresponding annual effective dose equivalents were all less than the public dose limit of 1 mSv y{sup {minus}1}, but the observed levels in the children were considerably higher than the average level of 2.3 Bq kg{sup {minus}1} reported in the past for the former Soviet Union. 6 refs., 4 figs., 1 tab.« less