01169454 BRA-08-024295; Author(s): Noshkin, V.E.; EDB-83-069487 Wong, R.d. K.M.; Jokela, T.A.; Brunk, J.L.; Eagle, Title: Comparative behavior of plutonium and americium in the equatorial Pacific Corporate Source: Lawrence Livermore National Lab., CA (USA) z Conference Title: 4. international ocean disposal symposium Conference Location: Devon, UK Conference Date: 11 Apr 1983 Publication Date: 1983 Report Number(s): Order Number: p 46 UCRL-88812; DE83009247 Contract Number (DOE): CONF-830424-1 , W-7405-ENG-48 Document Type: Report; Conference literature Language: English Journal Announcement: NTS8304 Availability: NTIS, PC A03/MF A0l. Subfile: NTS (NTIS); INS (US Atomindex Abstracts) . Country of Origin: United States Country of Publication: United States Abstract: input); ERA (Energy Research Inventories of /sup 239 +240/Pu and /sup 241/Am greatly in excess of global fallout levels persist in the benthic environments of Bikini and Enewetak Atolls. The amount of /sup 239 +240/Pu mobilized to solution at the atolls can be predicted from a distribution coefficient K/sub d/ of 2.3 x 10/sup 5/ and the mean sediment concentrations. The mobilized /sup 239 +240/Pu has solute-like characteristics and different valence states coexist in solution - the largest fraction of the soluble plutonium is in an oxidized form (+V,VI). The adsorption of plutonium to sediments is not completely reversible because of changes that occur in the relative amounts of the mixed oxidation states in solution with time. Characteristics of /sup 239 +240/Pu described at one location may not necessarily describe its behavior elsewhere. The relative amounts of /sup 241/Am to /sup 239 +240/Pu may be altered in future years because of mobilization and radiological decay.; Major Descriptors: *AMERICIUM 241 -- RADIONUCLIDE MIGRATION; *BIKINI -RADIOECOLOGY; *ENIWETOK -- RADIOECOLOGY; *FALLOUT -- RADIONUCLIDE MIGRATION; *PLUTONIUM 239 -- RADIONUCLIDE MIGRATION; *PLUTONIUM 240 RADIONUCLIDE MIGRATION Descriptors: BENTHOS; PARTICLE RESUSPENSION; SEDIMENTS -- Broader Terms: ACTINIDE ISOTOPES; ACTINIDE NUCLEI; ALPHA DECAY RADIOISOTOPES; AMERICIUM ISOTOPES; AQUATIC ORGANISMS; ECOLOGY; ENVIRONMENTAL TRANSPORT; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; HEAVY NUCLEI; ISLANDS; ISOTOPES; MARSHALL ISLANDS; MASS TRANSFER; MICRONESIA; NUCLEI; OCEANIA; ODD-EVEN NUCLEI; PLUTONIUM ISOTOPES; RADIOISOTOPES; YEARS LIVING RADIOISOTOPES Subject Categories: 520302* -- Environment, Aquatic -- Radioactive Materials Monitoring & Transport -- Aquatic Ecosystems & Food Chains -(-1987) INIS Subject Categories: 10/5/699 01151656 Author(s): Title: -- Radionuclide Ecology Martin, E.J.; Source: Rowland, 1954. R.H. Technical report Kaman Tempo, Santa Barbara, Publication Date: 1 Apr 1982 p 530 Report Number(s): AD-A-117574/4 Document Type: Report Language: English Journal Announcement: EDB8211 Availability: NTIS, PC A23/MF AOl. Subfile: ¥ (Item 399 from file: 103) ERA-08-018573; EDB-83-051678 Castle series, Corporate C22* ERA (Energy Research Abstracts). CA (USA) oN co on cy cj} Country of Origin: United States cD Country of Publication: United States urd Abstract: CASTLE was an atmospheric nuclear weapons test series held in the Marshall Islands at Enewetak and Bikini atolls in 1954. This is a