Medical screening of thyroid diseases in the Gomel region, Belarus
International Congress Series(2002)
Abstract
The change in 90Sr concentrations in hydrobionts, water and bottom sediments of the Chernobyl NPP pond-cooler, the Kievskoe and Kakhovskoe reservoirs, the Northern-Crimean canal and the Black Sea after the Chernobyl NPP accident was studied. The environmental half-times for the decrease of 90Sr concentrations were determined: in water – 4.1–24.3 years; algae and flowering water plants – 3.6–7.7 years, in molluscs – 2.4–6.7 years, and in fish – 7.8–12.9 years. The time for 90Sr concentrations to decrease to pre-accident levels were estimated: in freshwater reservoirs and the northwest part of the Black Sea this was 32–44 years, and in freshwater hydrobionts this was 25–73 years. The contribution of dose from 90Sr to the hydrobionts, sampled from the Kakhovskoe reservoir, the Northern-Crimean canal and the Black Sea, has not reached values which could impact them during the entire post-accident period. This complex of comparative studies was carried out for the first time.
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Key words
Medical screening,Thyroid diseases,Belarus
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