Mule deer antlers as biomonitors of strontium-90 on the Hanford Site

This study evaluated deer antlers as indicators of animal uptake of localized 90Sr contamination on the Hanford Site in south-central Washington. Levels of 90Sr were examined in 38 mule deer (Odocoileus hemionus hemionus) antler samples collected near and distant from previously active nuclear reactor facilities and from a reference site in central Oregon. Results showed that 90Sr concentrations in antlers collected near reactor facilities were significantly higher (P<0.001) than other Hanford samples. Reference samples contained nearly 5 times the levels of 90Sr compared with Hanford. Strontium-90 concentrations in deer antlers collected at the reference locations were higher than Hanford site deer, presumably because the deer inhabited mountain regions during the summer months that received more atmospheric fallout from historic weapons testing.

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