Transfer kinetics and coefficients of 90Sr, 134Cs, and 137Cs from forage contaminated by Chernobyl fallout to milk of cows.
A experiment was conducted to study kinetics, transfer coefficients, and biological half-lives of 90Sr, 134Cs, and 137Cs 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 90Sr, 134Cs, and 137Cs, respectively. The transfer coefficients determined in the experiment were 0.0008 d L-1 for 90Sr, 0.0029 d L-1 for 134Cs, and 0.0031 d L-1 for 137Cs. The biological elimination phases of 134Cs and 137Cs were described by a two-compartment model while a one-compartment model was proposed for 90Sr.
Fabbri
S
S
Unità Sanitaria Locale n.2, P.M.P., Piacenza, Italy.
Piva
G
G
Sogni
R
R
Fusconi
G
G
Lusardi
E
E
Borasi
G
G
D000059:Accidents; D000821:Animal Feed; D000818:Animals; D002588:Cesium Radioisotopes; D005507:Food Contamination, Radioactive; D008892:Milk; D009688:Nuclear Reactors; D011847:Radioactive Fallout; D013326:Strontium Radioisotopes; D014455:Ukraine
D002588:Cesium Radioisotopes; D011847:Radioactive Fallout; D013326:Strontium Radioisotopes