Tumbleweed and cheatgrass uptake of /sup 99/Tc from five Hanford soils. [/sup 95m/Tc tracer]
The accumulation of technetium (Tc) by tumbleweed and cheatgrass was measured for five Hanford Project soils at the initial soil concentration of 1.0 pg/g of /sup 99/Tc traced by /sup 95m/Tc at one, two, and three months' harvest times. Tc was added to the soil as pertechnetate, the chemical form likely to predominate in aerobic terrestrial environments. Uptake of Tc at the three months' harvest time ranged from 23 to 82 percent and 10 to 69 percent of the added Tc for tumbleweed and cheatgrass species, respectively. The soil order of percent uptake by tumbleweed was Lickskillet < Burbank < Rupert < Warden < Ritzville. Shoot concentrations of /sup 99/Tc ranged from 0.06 to 0.33 and from 0.05 to 0.36 ng/g for tumbleweed and cheatgrass, respectively. Shoot concentration generally decreased with increasing time of harvest.
- Research Organization:
- Battelle Pacific Northwest Labs., Richland, WA (United States)
- DOE Contract Number:
- EY-76C-06-1830; EY-76-C-06-21300
- OSTI ID:
- 7224331
- Report Number(s):
- BNWL-2183; TRN: 77-009318
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
PLANTS
RADIONUCLIDE KINETICS
SOILS
RADIONUCLIDE MIGRATION
TECHNETIUM 99
RADIOECOLOGICAL CONCENTRATION
AGE DEPENDENCE
GRASS
HAPO
ISOMERIC NUCLEI
RADIOACTIVITY
SPROUTING
TERRESTRIAL ECOSYSTEMS
TRACER TECHNIQUES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOMASS
ECOLOGICAL CONCENTRATION
ECOSYSTEMS
ENERGY SOURCES
ENVIRONMENTAL TRANSPORT
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPE APPLICATIONS
ISOTOPES
MASS TRANSFER
NATIONAL ORGANIZATIONS
NUCLEI
ODD-EVEN NUCLEI
RADIOISOTOPES
RENEWABLE ENERGY SOURCES
TECHNETIUM ISOTOPES
US AEC
US ERDA
US ORGANIZATIONS
YEARS LIVING RADIOISOTOPES
510300* - Environment
Terrestrial- Radioactive Materials Monitoring & Transport- (-1989)
510302 - Environment
Terrestrial- Radioactive Materials Monitoring & Transport- Terrestrial Ecosystems & Food Chains- (-1987)