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  • Title: Transfer of 90Sr into fish in Finnish lakes.
    Author: Outola I, Saxén RL, Heinävaara S.
    Journal: J Environ Radioact; 2009 Aug; 100(8):657-64. PubMed ID: 19539409.
    Abstract:
    The long-term behavior of (90)Sr was investigated from 1987 to 1997 in fifteen lakes in southern and central Finland following the 1986 Chernobyl accident. Both water and fish samples (perch, pike, vendace) were analyzed. (90)Sr stays long in the freshwater ecosystem; the observed half-lives during the study period were generally around 10 years in water and even longer in fish. One lake exhibited very different behavior for (90)Sr, with elevated levels in fish and water and very short observed half-life in fish, less than 2 years. Concentration factors of (90)Sr in fish (Bqkg(-1) f.w. in fish/Bqkg(-1) in water) among the studied lakes significantly correlated with both the Ca concentration and electrical conductivity of the water. More (90)Sr was transferred into fish in lakes with a low electrical conductivity and a low Ca concentration. Among other water parameters evaluated were pH, color, total nitrogen, and phosphorus.
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