Journal
SCIENCE OF THE TOTAL ENVIRONMENT
Volume 273, Issue 1-3, Pages 163-169Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0048-9697(00)00849-4
Keywords
isotopes; uranium; thorium; radium-226; activity concentrations; foodstuffs; water; intake; dose equivalent
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Activity concentration of the uranium and thorium series radionuclides was determined in foodstuffs and drinking water in central Poland. Annual and daily intake for the adult population was estimated from the concentrations determined and average annual consumption of food and water. The daily intakes (in mBq) were 22.1 (U-238), 26.5 (U-234), 2.38 (Th-232), 4.06 (Th-230), (11.2)(228Th) and 42.2 (Ra-226). The intake of uranium isotopes occurred mainly with water; the main intake of thorium isotopes was with animal products, vegetables, cereals and potatoes, whereas 226Ra entered mainly with animal products, cereals and vegetables. From the intake and dose coefficients, the annual effective doses for the ingested radionuclides were calculated. The annual effective dose was 5.95 muS nu, Of which 72.4% originated from Ra-226. (C) 2001 Elsevier Science B.V. All rights reserved.
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