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Age and gender related dietary dose from 90Sr in fallout from nuclear tests and the Chernobyl accident in Finland
Published online by Cambridge University Press: 09 January 2012
Abstract
Annual intake of 90Sr trough foodstuffs and drinking water was assessed for eleven age categories of Finnish females and males in 1955–2010. Maximum intakes were received by young men in 1963–64. Cereals and milk contributed more than 80% to the dietary dose then. Per capita dose from ingestion of 90Sr corresponded to the dose for a boy 13 years of age and a man older than 65 years. Lifetime committed effective dose from ingestion of 90Sr for a newborn male was 0.49 mSv and for a 20 years old male 0.32 mSv, when the exposure of 70 and 50 years started in the beginning of 1955. For females the doses were 0.39 and 0.25 mSv, respectively. The activity concentrations of 90Sr in milk varied in the whole country by a factor of two in the years of maximum fallout and decreased towards the 1980s. Also other than soil related factors have contributed to the variation in human exposure to dietary 90Sr.
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