Contents Of Natural Radium-226 And Lead-210In Foods Produced Within The Russian Territory

Dynamical examination of contents of the observed natural radionuclides in prime foodstuffs demonstrated their relative stability. Generally, Pb and Ra specific activities in foodstuffs depend upon the food type and options of agriculture management. Many-year researches show that average specific activities of Pb and Ra for different foodstuffs vary over the range 0.04-0.15 Bq/kg and 0.02-0.08 Bq/kg. Soil dependence of Pb and Ra contents in foodstuffs has not been revealed. Taking into account the food patterns of the Russian population, the highest intake of Pb and Ra is due to ingestion of bread, meat and drinking water. Annual effective internal doses are about 50 μSv/a.