caa a22 4500 46911181X CHVBK 20180323133113.0 cr unu---uuuuu 170328e19920101xx s 000 0 eng 10.1007/BF02038350 doi (NATIONALLICENCE)springer-10.1007/BF02038350 Yamato A. Power Reactor and Nuclear Fuel Development Corporation, 1-9-13 Akasaka Minato-ku, 107, Tokyo, (Japan) aut Concentration levels and behavior of transuranium nuclides in Japanese coastal marine environment [Elektronische Daten] [A. Yamato] The concentration of239,240Pu and241Am in different samples collected from the coastal marine environment of Ibaraki Prefecture, Japan facing the Pacific Ocean have been studied. Seawater samples have been collected since 1975 and sea-biota since 1981. The mean concentration levels of239,240Pu and241Am were 0.51, 0.20 for anchovy, 0.22, 0.11 for flounder, 4.9, 0.77 for brown algae, 2.0, 2.4 for shellfish, and 0.022, 0.0028 for seawater (in mBq/kl), respectively. The chronological change of239,240Pu in seawater was influence by fallout amounts. The activity ratio between the nuclides showed steady levels after two years from the end of atmospheric nuclear explosion tests. Activity levels and the ratios for each type of sample are briefly discussed. Akadémiai Kiadó, 1992 Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 156/2(1992-01-01), 349-360 0236-5731 156:2<349 1992 156 10967 https://doi.org/10.1007/BF02038350 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02038350 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Yamato A. Power Reactor and Nuclear Fuel Development Corporation, 1-9-13 Akasaka Minato-ku, 107, Tokyo, (Japan) aut NATIONALLICENCE 773 0- Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 156/2(1992-01-01), 349-360 0236-5731 156:2<349 1992 156 10967 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer