海産魚によるコバルト-60の海水からの取り込みと排出

概要

論文の詳細を見る
The accumulatio and excretion of 60Co taken up from seawater were observed using marine fishes to examine the radioactive pollution of marine organisms. Blood, internal medium was a good reserving pool of the nuclide in the fishes and it accumulated more than 15% of the radioactivity in the whole body of the fishes reared for about 90 days in the uptake experiment. Only liver and kidney showed higher radioactivity per unit weight than blood, in the tissues and organs, and muscle showed the lowest concentration of the nuclide. The biological half-lives in muscle of sea bream, yellowtail and flounder at 15°C were calculated as 38.5, 53.3 and 63.0 days, respectively. The steady state concentration factors of muscle by direct uptake of 60Co from seawater were estimated in the range from 0.3 to 1.5 among the fishes in the experiments.
日本水産學會の論文