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Plant uptake of americium, curium, and the chemical analog neodymium. [/sup 241/Am, /sup 244/Cm, /sup 147/Nd]

Conference ·
OSTI ID:6921680
; ; ;

The plant uptake from several bulk soils has been determined for neodymium, a chemical analog to the transuranium elements americium and curium, and several other native rare earth elements as well. These investigations have demonstrated that neodymium, which has very similar chemical properties to americium and curium and should have a similar environmental behavior, does behave indistinquishably under both laboratory and field conditions. The uptake of the weathered or mobile forms of these elements from soils is expected to be governed primarily by their identical oxidation states and nearly identical ionic radii. This hypothesis is strongly supported by the chondritic (primordial) normalized rare earth element patterns in several plants. In these samples, the entire series of rare earth elements behaves as a smooth function of the REE ionic radii, as is also seen in the contiguous soils. This behavior suggests that the plant uptake of other ions with similar chemical properties (i.e., americium and curium) would also be governed by ionic size and charge.

Research Organization:
Battelle Pacific Northwest Labs., Richland, WA (USA)
DOE Contract Number:
EY-76-C-06-1830
OSTI ID:
6921680
Report Number(s):
BNWL-SA-6314; CONF-771072-8
Country of Publication:
United States
Language:
English

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Related Subjects

560173* -- Radiation Effects-- Nuclide Kinetics & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
AMERICIUM 241
AMERICIUM ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOMASS
CHARGED PARTICLES
CHEMICAL REACTIONS
CURIUM 244
CURIUM ISOTOPES
DAYS LIVING RADIOISOTOPES
ENERGY SOURCES
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
HEAVY NUCLEI
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
IONS
ISOTOPES
NEODYMIUM 147
NEODYMIUM ISOTOPES
NUCLEI
ODD-EVEN NUCLEI
OXIDATION
PLANTS
RADIOISOTOPES
RADIONUCLIDE KINETICS
RARE EARTH NUCLEI
RENEWABLE ENERGY SOURCES
UPTAKE
YEARS LIVING RADIOISOTOPES