NOV (DOE contractor) US DOE Project/NonDOE Project: NP Country of Origin: United States Country of Publication: United States Abstract: Bikini Atoll in the Marshall Islands of the South Pacific was extensively contaminated with radionuclides deposited by thermonuclear weapons testing in the 1940s and 1950s. In recent years, the U.S. government has attempted to restore the habitability of the islands by cleaning up the remaining radioactive material. Although the island no longer presents an acute radiation risk to inhabitants, plants growing on the island concentrate cesium-137 from the soil, presenting an unacceptable risk to the future population. The behavior of Cs-137 has proved to be an intractable problem that has major implications for the risks associated with transporting and processing high-level nuclear wastes in the U.S. Various proposed soil treatment strategies for Bikini are discussed, including ion-exchange treatments and competing-ion strategies. No fully satisfactory treatment currently exists and the problems and prospects of cleaning up after a major nuclear waste spill are presented. Major Descriptors: *BIKINI -- RADIATION HAZARDS; *CESIUM 137 -- REMOVAL; *SOILS -- DECONTAMINATION Descriptors: RADIOCECOLOGICAL CONCENTRATION; RADIONUCLIDE MIGRATION Broader Terms: ALKALI METAL ISOTOPES; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CESIUM ISOTOPES; CLEANING; ECOLOGICAL CONCENTRATION; ENVIRONMENTAL TRANSPORT; HAZARDS; HEALTH HAZARDS; ISLANDS; ISOTOPES; MARSHALL ISLANDS; MASS TRANSFER; MICRONESIA; NUCLEI; OCEANIA; ODD-EVEN NUCLEI; RADIOISOTOPES; YEARS LIVING RADIOISOTOPES Subject Categories: 540230* -- Environment, Terrestrial -- Radioactive Materials Monitoring & Transport -- (1990-) INIS Subject Categories: B3110* -- Radioactive materials monitoring & transport 10/5/363 02853795 (Item 63 from file: 103) AIX-21-039596; EDB-90-071034 Title: Agronomic behavior of phosphoric rock from Bahia Inglesa using isotopic techniques. 2. Greenhouse experiment in three volcanic ash soils Original Title: Evaluacion agronomica de roca de Bahia Inglesa con utilizacion de tecnicas isotopicas. 2. Efecto de la aplicacion de roca fosforica en tres suelos derivados de cenizas volcanicas en condiciones de invernadero Author(s): Pino N, I.; Santiago (Chile) ) Casas G, L. (Comision Chilena de Energia Nuclear, Source: Nucleotecnica (Chile) v 9:16. Coden: NUCLE ISSN: 0716-0054 Publication Date: Apr 1989 p 37-40 Document Type: Journal Article Language: In Spanish Journal Announcement: EDB9010 Subfile: ETD (Energy Technology Data Exchange). INIS (non-US Atomindex input AIX) Country of Origin: Chile Country of Publication: Chile Abstract: With the aim to evaluate the behaviour of phosphoric rock in regard to the sorption capacity from three volcanic ash soils, a greenhouse trial was carried out. The isotopic dilution method with triple superphosphate labeled P32 (TSP-32) was used. Total dry matter, P total was determined by colorimetry and the liquid scintillation 9003100 US DOE Project/NonDOE Project: NP method for P32 was used. The evaluation of the rock was measured through different isotopical parameters such as A value and P derived from the rock. The behaviour of this material was affected by the different properties of the soils mainly on account of the diverse sorption capacity of them giving an inverse relation among sorption and effectiveness of the rock. The results showed a higher efficiency of TSP for the three soils compared with the phosphoric rock either