Transfer coefficient of 226Ra from vegetation to meadow voles, Microtus pennsylvanicus, on U mill tailings
Journal Article
·
· Health Phys.; (United States)
The 226Ra level in vegetation growing on U mine tailings in Elliot Lake, Ontario, Canada, was 211 + 22 mBq g-1 (dry weight) compared to less than 7 mBq g-1 (dry weight) in material from a control site. Skeletons of meadow voles (Microtus pennsylvanicus) established on the tailings had concentrations of 226Ra of 6083 +/- 673 mBq per animal in winter; 7163 +/- 1077 mBq per animal in spring; 1506 +/- 625 mBq per animal in summer; and 703 +/- 59 mBq per animal in fall, compared to less than 7 mBq per animal in controls. The /sup 226/Ra transfer coefficient from vegetation to voles (defined as total millibecquerels of /sup 226/Ra in adult vole per total millibecquerels of 226Ra consumed by the vole in its lifetime) was calculated as 4.6 +/- 2.9 X 10(-2) in summer and 2.8 +/- 0.6 X 10(-2) in fall.
- Research Organization:
- Laurentian Univ., Sudbury, Ontario
- OSTI ID:
- 5368206
- Journal Information:
- Health Phys.; (United States), Journal Name: Health Phys.; (United States) Vol. 6; ISSN HLTPA
- Country of Publication:
- United States
- Language:
- English
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ALKALINE EARTH ISOTOPES
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ELEMENTS
ENVIRONMENTAL TRANSPORT
EVEN-EVEN NUCLEI
HEAVY NUCLEI
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METALS
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NORTH AMERICA
NUCLEI
ONTARIO
PLANTS
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