Experimental determination of transfer coefficients of sup 137 Cs and sup 131 I from fodder into milk of cows and sheep after the Chernobyl accident

Journal Article · Fri Dec 01 04:00:00 EST 1989 · Health Physics; (USA)

DOI:https://doi.org/10.1097/00004032-198912000-00012· OSTI ID:5079701

Voigt, G; Mueller, H P; Proehl, G P; Paretzke, H G; Propstmeier, G; Roehrmoser, G H; Hofmann, P ^[1]

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1. GSF-Institut fuer Strahlenschutz, Neuherberg (Germany, F.R.)

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) 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.

• OSTI ID: 5079701
• Journal Information: Health Physics; (USA), Journal Name: Health Physics; (USA) Vol. 57:6; ISSN 0017-9078; ISSN HLTPA
• Country of Publication: United States
• Language: English

Related Subjects

560162* -- Radionuclide Effects
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63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ACCIDENTS
ALKALI METAL ISOTOPES
ANIMAL FEEDS
ANIMALS
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DAYS LIVING RADIOISOTOPES
DOMESTIC ANIMALS
EASTERN EUROPE
ENRICHED URANIUM REACTORS
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FEDERAL REPUBLIC OF GERMANY
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GRAPHITE MODERATED REACTORS
INTERMEDIATE MASS NUCLEI
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LWGR TYPE REACTORS
MAMMALS
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RADIONUCLIDE KINETICS
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RUMINANTS
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THERMAL REACTORS
UKRAINIAN SSR
UPTAKE
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WATER COOLED REACTORS
WESTERN EUROPE
YEARS LIVING RADIOISOTOPES