Broader Terms: ACTINIDE ISOTOPES; ACTINIDE NUCLEI; ALKALI METAL ISOTOPES; ALKALINE EARTH ISOTOPES; ALPHA DECAY RADIOISOTOPES; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BIOMASS; CESIUM ISOTOPES ; DOSES; ECOSYSTEMS; ENERGY SOURCES; ENVIRONMENTAL TRANSPORT; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; FOOD; HEAVY NUCLEI; INTERMEDIATE MASS NUCLEI; IRRADIATION; ISLANDS; ISOTOPES; MARSHALL ISLANDS; MASS TRANSFER; NUCLEI ; ODD-EVEN NUCLEI; PLUTONIUM ISOTOPES; POPULATIONS; RADIOISOTOPES; RENEWABLE ENERGY SOURCES; STRONTIUM ISOTOPES; YEARS LIVING RADIOISOTOPES Subject Categories: 560161* Toxicology -- Man 510300 --- Environment, & Transport -- (-1989) -- Radionuclide Effects, & ‘ Terrestrial -- Radioactive Materials Monitoring INIS Subject Categories: C21* -- Tissue Distribution, Toxicology & Removal of Radionuclides B31 Kinetics, Metabolism, -- Land 10/5/978 (Item 678 from file: 103) 00219143 INS-77-006651; ERA-02-027409; EDB-77-056951 Title: Laboratory experiments on the transfer of plutonium from marine sediments to seawater and to marine organisms Author(s): Mo, Affiliation: T.; Lowman, F.G.; Cushing, Puerto Rico Nuclear Center, Title: Radioecology and energy resources C.E. Jr. Mayaguez (ed.) (/sup 239/Pu, /sup 240/Pu) Conference Title: 4. national symposium on radiocecology Conference Location: Corvallis, OR, USA Conference Date: 12 May 1975 Publisher: Halsted Press,New York Publication Date: 1976 p 86-95 Note: CONF-750503-Document Type: Analytic of a Book; Conference literature Language: English Journal Announcement: EDB7704 Subfile: ERA (Energy Research Abstracts); INS (US Atomindex input); (Technical Information Center). TIC Country of Origin: Puerto Rico Country of Publication: United States Abstract: The leachability of /sup 239/,/sup 240/Pu from a fine calcareous sediment to aerated open seawater and to anoxic seawater was measured. The ratio of the specific activity of /sup 239/,/sup 240/Pu of the water to that of the sediment was 2.52 x 10/sup -5/ for aerated water and 2.54 x 10/sup -6/ for anoxic water. Experiments on the uptake of /sup 239/,/sup 240/Pu by the clams Donax denticulatus and Lucina pectinata were done in aquaria containing kilogram quantities of sediment from the Bravo Crater at Bikini Atoll. The concentration factor for /sup 239/,/sup 240/Pu by the soft parts of these clams was about 200. All the plutonium taken up in the soft parts of the Lucina was associated with the gill, mantle and siphon. No plutonium was detected in the adductor muscles or hepatopancreas of the Luciina. The smooth surfaces of the shells of the Donax concentrated plutonium by a factor of not more than 10, but the rough shell surfaces of the Lucina seawater. Marine periphyton cultured on glass plates in an aquarium concentrated /sup 239/,/sup 240/Pu by a factor of about 7 x 10/sup 3/ over that in the seawater.; 9004077 concentrated plutonium by a factor of 1.10 x 10/sup 4/ over that in the Major Descriptors: *MOLLUSCS -- RADIONUCLIDE MIGRATION; *PLUTONIUM 239 -UPTAKE; *PLUTONIUM 240 -- UPTAKE; *SEAWATER ~- RADIONUCLIDE MIGRATION; *SEDIMENTS -- RADIONUCLIDE MIGRATION Descriptors: AQUATIC ORGANISMS; LEACHING; OXYGEN; TISSUE DISTRIBUTION Broader Terms: ACTINIDE ISOTOPES; ACTINIDE NUCLEI; ALPHA DECAY RADIOISOTOPES; ANIMALS; AQUATIC ORGANISMS; CRYOGENIC FLUIDS; DISSOLUTION; DISTRIBUTION; ELEMENTS; ENVIRONMENTAL TRANSPORT; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; FLUIDS; HEAVY NUCLEI; HYDROGEN COMPOUNDS; INVERTEBRATES; ISOTOPES; MASS TRANSFER; NONMETALS; NUCLEI; OXYGEN COMPOUNDS; PLUTONIUM ISOTOPES; RADIOISOTOPES; SEPARATION PROCESSES; WATER; YEARS LIVING RADIOISOTOPES Subject Categories: 520300* -- Environment, Aquatic -- Radioactive