Ingested soil as a source of 137Cs to ruminants

M. Belli, M. Blasi, E. Capra, A. Drigo, S. Menegon, E. Piasentier, U. Sansone

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Ingestion of soil has been identified as a potentially important source of radionuclides, particularly to grazing ruminants. Soil artificially contaminated with radiocaesium was administered orally each day for 33 days to Bergamasca sheep and the transfer to milk measured. Two soil types were used, with a clay content of 11% and 16%, respectively. Transfer coefficient (fm) values to sheep milk, calculated at the equilibrium (period from 7th to 21st day after soil administration), were 3.72 × 10-4days 1-1(S.D. = 7.2 × 10-5days 1-1) and 6.11 × 10-4days 1-1(S.D. = 9.1 × 10-5days 1-1), respectively for the two soils. These low values indicate that radiocaesium is not removed from the binding sites on the clay minerals in the gut of the sheep. © 1993.
Original languageEnglish
Pages (from-to)243 - 249
Number of pages7
JournalScience of the Total Environment
Issue number3
Publication statusPublished - 31 Aug 1993
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Environmental Science(all)
  • Environmental Chemistry

Cite this

Belli, M., Blasi, M., Capra, E., Drigo, A., Menegon, S., Piasentier, E., & Sansone, U. (1993). Ingested soil as a source of 137Cs to ruminants. Science of the Total Environment, 136(3), 243 - 249.