90Sr specific activity of teeth of abandoned cattle after the Fukushima accident – teeth as an indicator of environmental pollution
Highlights
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90Sr in cattle teeth was determined after the Fukushima accident.
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90Sr was efficiently incorporated into the teeth at development stages.
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90Sr specific activity of aqueous extract was higher than that of soil.
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Water soluble 90Sr was incorporated into the cattle and accumulated.
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Sr transfer is eliminated compared to Ca in the migration route.
Abstract
90Sr specific activity in the teeth of young cattle that were abandoned in Kawauchi village and Okuma town located in the former evacuation areas of the Fukushima-Daiichi Nuclear Power Plant (FNPP) accident were measured. Additionally, specific activity in contaminated surface soils sampled from the same area was measured. (1) All cattle teeth examined were contaminated with 90Sr. The specific activity, however, varied depending on the developmental stage of the teeth during the FNPP accident; teeth that had started development before the accident exhibited comparatively…
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