Comparative behavior of plutonium and americium in the equatorial Pacific
Conference
·
OSTI ID:6526455
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.
- Research Organization:
- Lawrence Livermore National Lab., CA (USA)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 6526455
- Report Number(s):
- UCRL-88812; CONF-830424-1; ON: DE83009247
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
520302* -- Environment
Aquatic-- Radioactive Materials Monitoring & Transport-- Aquatic Ecosystems & Food Chains-- (-1987)
54 ENVIRONMENTAL SCIENCES
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
AMERICIUM 241
AMERICIUM ISOTOPES
AQUATIC ORGANISMS
BENTHOS
BIKINI
ECOLOGY
ENIWETOK
ENVIRONMENTAL TRANSPORT
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FALLOUT
HEAVY NUCLEI
ISLANDS
ISOTOPES
MARSHALL ISLANDS
MASS TRANSFER
MICRONESIA
NUCLEI
OCEANIA
ODD-EVEN NUCLEI
PARTICLE RESUSPENSION
PLUTONIUM 239
PLUTONIUM 240
PLUTONIUM ISOTOPES
RADIOECOLOGY
RADIOISOTOPES
RADIONUCLIDE MIGRATION
SEDIMENTS
YEARS LIVING RADIOISOTOPES
Aquatic-- Radioactive Materials Monitoring & Transport-- Aquatic Ecosystems & Food Chains-- (-1987)
54 ENVIRONMENTAL SCIENCES
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
AMERICIUM 241
AMERICIUM ISOTOPES
AQUATIC ORGANISMS
BENTHOS
BIKINI
ECOLOGY
ENIWETOK
ENVIRONMENTAL TRANSPORT
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FALLOUT
HEAVY NUCLEI
ISLANDS
ISOTOPES
MARSHALL ISLANDS
MASS TRANSFER
MICRONESIA
NUCLEI
OCEANIA
ODD-EVEN NUCLEI
PARTICLE RESUSPENSION
PLUTONIUM 239
PLUTONIUM 240
PLUTONIUM ISOTOPES
RADIOECOLOGY
RADIOISOTOPES
RADIONUCLIDE MIGRATION
SEDIMENTS
YEARS LIVING RADIOISOTOPES