Radiocesium bioavailability: Transfer of Chernobyl and tracer radiocesium to goat milk

Journal Article · Wed May 01 04:00:00 EDT 1991 · Health Physics; (USA)

DOI:https://doi.org/10.1097/00004032-199105000-00005· OSTI ID:5472815

Hansen, H S; Hove, K ^[1]

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1. Agricultural Univ. of Norway, As-NLH (Norway)

The bioavailability of Chernobyl-derived radiocesium in hay, fungal fruit bodies, willow bark, and soil was compared to tracer radiocesium ({sup 134}CsCl) by measuring transfer coefficients (Fm) to goat milk. The average Fm value from {sup 134}CsCl of 11.9 x 10{sup {minus}2} d L-1 was taken to represent the maximal transfer to milk on the provided diet. In 1986, the Fm value from hay was 35% of that from {sup 134}CsCl, thus demonstrating the low bioavailability of recently deposited radiocesium. Values in 1987 were also lower, with a mean of 76% of that from tracer Cs. During 1988 and 1989, maximal Fm values were observed, suggesting increased bioavailability from the year of fallout to the following years. Transfer of radiocesium from two fungal species harvested in 1988 and 1989 were 78% and 87%, respectively, of that from tracer Cs, while bark was lower (62%). Transfer from organic soil was only 7% of tracer radiocesium, and therefore contribution from soil ingestion could only have a small impact on the content of radiocesium in animals. Live monitoring measurements and the excretion of {sup 134}Cs in milk, urine, and feces during a 50-d period was adequately described by a two-exponential equation.

• OSTI ID: 5472815
• Journal Information: Health Physics; (USA), Journal Name: Health Physics; (USA) Vol. 60:5; ISSN 0017-9078; ISSN HLTPA
• Country of Publication: United States
• Language: English

Related Subjects

560162* -- Radionuclide Effects
Kinetics
& Toxicology-- Animals
Plants
Microorganisms
& Cells
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ACCIDENTS
ALKALI METAL ISOTOPES
ANIMALS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOLOGICAL AVAILABILITY
BIOLOGICAL MATERIALS
BODY FLUIDS
CESIUM 134
CESIUM ISOTOPES
CHERNOBYLSK-4 REACTOR
CONTAMINATION
DEVELOPED COUNTRIES
DOMESTIC ANIMALS
ELECTRON CAPTURE RADIOISOTOPES
ENRICHED URANIUM REACTORS
EQUATIONS
EUROPE
FALLOUT
FOOD
FOOD CHAINS
GOATS
GRAPHITE MODERATED REACTORS
HOURS LIVING RADIOISOTOPES
INGESTION
INTAKE
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSI
ISOTOPES
LWGR TYPE REACTORS
MAMMALS
MATERIALS
MILK
NORWAY
NUCLEI
POWER REACTORS
RADIOISOTOPES
REACTOR ACCIDENTS
REACTORS
RUMINANTS
SCANDINAVIA
THERMAL REACTORS
VERTEBRATES
WATER COOLED REACTORS