10/5/615 (Item 315 from file: 103) 01661104 INS-85-023907; ERA-10-052607; EDB-85-167884 Title: Radionuclides in plankton from the South Pacific Basin Author(s): Marsh, K.V.; Buddemeier, R.W.; ne J.R. (ed.} Affiliation: Lawrence Livermore National Lab., CA Title: Nuclear methods in environmental and energy research: proceedings of fifth international conference Corporate Source: Missouri Univ., Columbia (USA) Conference Title: 5. international conference on nuclear methods in environmental and energy research ’ Conference Location: Mayaguez, Puerto Rico Conference Date: 2 Apr 1984 Publication Date: Apr 1984 p 331-339 Report Number(s): CONF-840408- Order Number: DE84017348 Contract Number (DOE): W-7405-ENG-48 Document Type: Analytic of a Report; Conference literature Lanquage: English Journal Announcement: EDB8511 Availability: NTIS, PC A99/MF AOl; 1. Subfile: ERA (Energy Research Abstracts); Country of Origin: United States Country of Publication: United States INS (US Atomindex input). Abstract: An investigation has been initiated of the utility of marine plankton as bioconcentrating samplers of low-level marine radioactivity in the southern hemisphere. A literature review has shown that both freshwater and marine plankton have trace element and radionuclide concentration factors (relative to water) of up to 10/sup 4/. In 1956 and 1958 considerable work was done on the accumulation and distribution of a variety of fission and activation products produced by nuclear tests in the Marshall Islands. Since then, studies, have largely been confined to a few radionuclides, and most of the work in the last twenty years has been done in the northern hemisphere. The authors participated in Operations Deepfreeze 1981 and 1982, collecting a total of 48 plankton samples from the USCGC Glacier on its Antarctic cruises. Battelle Pacific Northwest Laboratories sampled air, water, vain, and fallout. The authors were able to measure concentrations plankton of the naturally-occurring radionuclides /sup 7/Be, and the U and Th series, in /sup 40/K, and they believe that they have detected low levels of /sup 144/Ce and /sup 95/Nb in seven samples ranging as far south as 68/sup 0/. Biological identification of the plankton suggests @ possible correlation between radionuclide concentration and the protozoa content of the samples. 7 references, 5 figures, 1 table. Major Descriptors: *BERYLLIUM 7 -- BIOLOGICAL ACCUMULATION; *BERYLLIUM 7 =<RADIOECOLOGICAL CONCENTRATION; *CERIUM 144 -- BIOLOGICAL ACCUMULATION; *CERIUM 144 -~ RADIOBRCOLOGICAL CONCENTRATION; *NIOBIUM 95 -- BIOLOGICAL ACCUMULATION; *NIOBIUM 95 -- RADIOECOLOGICAL CONCENTRATION; *POTASSIUM 40 -- BIOLOGICAL ACCUMULATION; *POTASSIUM 40 -- RADIOECOLOGICAL CONCENTRATION; *THORIUM -- BIOLOGICAL ACCUMULATION; *THORIUM “RADIOECOLOGICAL CONCENTRATION; *URANIUM -- BIOLOGICAL ACCUMULATION; *URANIUM -- RADIOECOLOGICAL CONCENTRATION Descriptors: MARSHALL ISLANDS; NUCLEAR EXPLOSIONS; PACIFIC OCEAN; PLANKTON; WATER POLLUTION Broader Terms: ACTINIDES; ALKALI METAL ISOTOPES; ALKALINE EARTH ISOTOPES; AQUATIC ORGANISMS; BERYLLIUM ISOTOPES; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; CERIUM ISOTOPES; DAYS LIVING RADIOISOTOPES; ECOLOGICAL CONCENTRATION; ELECTRON CAPTURE RADIOISOTOPES; ELEMENTS; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; EXPLOSIONS; INTERMEDIATE MASS NUCLEI; ISLANDS; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; LIGHT NUCLEI; METALS; MICRONESIA; NIOBIUM ISOTOPES; NUCLEI; OCEANIA; ODD-EVEN NUCLEI; ODD-ODD NUCLEI; POLLUTION; POTASSIUM ISOTOPES; RADIOISOTOPES; RARE EARTH ISOTOPES; RARE EARTH NUCLEI; SEAS; SURFACE WATERS; YEARS LIVING RADIOISOTOPES Subject Categories: 560174* -= Radiation Effects -- Nuclide Kinetics & Toxicology -- Microorganisms -- (-1987) INIS Subject Categories: C2120* -- Radioisotope effects, kinetics, & toxicology in animals, plants & microorganisms my Lee CxO v7 a a