560173 -- Radiation Effects -- Nuclide Kinetics & Toxicology -~ Plants -- (-1987) -- Radiometric & Radiochemical Procedures 400103 INIS Subject Categories: B31* -- Land C22 -- Radionuclide Ecology -- Tissue Distribution, Metabolism, C21 Radionuclides Bll -- Chemical & Isotopic Analysis 10/5/960 (Item 660 from file: 00345211 Author(s): ERA-03-015906; Schell, W.R. 103) INS-78-002860; Title: Biogeochemistry of Transuranics, 26 February 1976--25 February 1977 water volumes) Corporate Source: Washington Univ., NTS-78-002254; Bikini. Annual progress report, (Pu and Am separation from large Seattle NTS (USA). Coll. of Fisheries EDB7802 Availability: Dep. NTIS, PC A04/MF A0l. Abstracts); ‘ EDB-78-033839 Report Language: English Journal Announcement: Subfile: (-1987) Toxicology & Removal of Publication Date: 28 Dec 1976 p 42 Report Number(s): RLO-2225-T18-20 Contract Number (DOE): EY-76-S-06-2225-018 Document Type: -- (NTIS); TIC INS (Technical (US Atomindex input); Information Center). ERA (Energy Research Country of Origin: United States Country of Publication: United States Abstract: Progress is reported on a study to evaluate the cycling of the transuranic radionuclides in the aquatic environment, their distribution within ecosystems, their uptake by biota and their sinks at Bikini. This year, the study has been to evaluate the Battelle large volume water sampler, BLVWS. Laboratory and field experiments on the collection efficiency for Pu, Am and other radionuclides using Al/sub 2/O/sub 3/ and Chelex-100 sorption beds in fresh and salt water have been completed. The sampler, with three or four sorption beds, has proven to be a reliable collector for Pu and Am, giving concentration values comparable to conventional sampling methods in laboratory studies with known radionuclide concentrations and in field studies where the concentrations were unknown. Possible speciation of Pu into colloidal, particulate, and soluble fractions has been indicated in both the tank and field collections. The larger volumes of water which were processed by the BLVWS method, (4 vs. 0.09 m/sup 3/), in the near Washington Coastal waters, gave lower detection limits for Pu concentrations than those found by the conventional batch sample method. Interpretations of the Pu concentrations found in sediment and water samples collected at Bikini Atoll in 1972 and 1976 have been made.; Major Descriptors: *AMERICIUM -- SEPARATION PROCESSES; *BIKINI --* RADIATION MONITORING; *FRESH WATER -- SAMPLING; *PLUTONIUM -- SEPARATION PROCESSES; *SEAWATER -- SAMPLING; *TRANSURANIUM BLEMENTS -- ENVIRONMENTAL TRANSPORT Descriptors: AQUATIC ECOSYSTEMS; CHEMISORPTION; ENVIRONMENT; PLANTS; TERRESTRIAL BCOSYSTEMS Broader Terms: ACTINIDES; BIOMASS; CHEMICAL REACTIONS; ECOSYSTEMS; ELEMENTS ; ENERGY SOURCES; HYDROGEN COMPOUNDS; ISLANDS; MARSHALL ISLANDS; MASS TRANSFER; METALS; MONITORING; OXYGEN COMPOUNDS; RENEWABLE ENERGY SOURCES; SEPARATION PROCESSES; SORPTION; TRANSPLUTONIUM ELEMENTS; TRANSURANIUM ELEMENTS; WATER Subject Categories: 520300* -- Environment, Aquatic -- Radioactive Materials Monitoring & Transport -- (1989) 510300 -- Environment, Terrestrial -- Radioactive Materials Monitoring & Transport -- (-1989) 400105 -- Separation Procedures INIS Subject Categories: B32* B31 Bll -- Land -- Water -- Chemical & Isotopic Analysis SOGnObE