Factors affecting the availability of americium-241 to the rice plant

Journal Article · Wed Oct 31 23:00:00 EST 1979 · J. Agric. Food Chem.; (United States)

DOI:https://doi.org/10.1021/jf60226a071· OSTI ID:5297381

Adriano, D C

Since there has been no published transuranic uptake data on the rice plant (Oryza sativa L.), greenhouse experiments were conducted to determine the effects of some factors on the uptake of /sup 241/Am by this crop. Results indicate that chelated /sup 241/Am (in the form of americium-241-diethylenetriaminepentaacetic acid) applied to the flood water was markedly taken up by the rice plant, compared to the nonchelated form. However, most of the accumulation of /sup 241/Am occurred in the vegetative parts and only trace amounts, if any, were translocated to the grain. Soil application of /sup 241/Am resulted in much lower uptake. Soil amendment with either diethylenetriaminepentaacetic acid (DTPA) or organic matter did not produce a discernible uptake pattern. A synthesis of published data on plant uptake of /sup 241/Am indicates that the concentration ratio (CR, a measure of availability of /sup 241/Am to the plants) values for /sup 241/Am for agricultural crops ranged from 10-/sup 6/ to 10/sup 1/ (from lowest to highest availability). Some factors that appear to influence /sup 241/Am uptake are as follows: plant parts (grain usually having lower CR), chelating agents (DTPA usually increasing the CR), organic matter (inconsistent effects although generally decreasing the CR), and lime (usually decreasing the CR).

• Research Organization: Savannah River Ecology Lab., Aiken, SC
• DOE Contract Number: EY-76-C-09-0819
• OSTI ID: 5297381
• Journal Information: J. Agric. Food Chem.; (United States), Journal Name: J. Agric. Food Chem.; (United States) Vol. 27:6; ISSN JAFCA
• Country of Publication: United States
• Language: English

Related Subjects

510301 -- Environment
Terrestrial-- Radioactive Materials Monitoring & Transport-- Soil-- (-1987)
54 ENVIRONMENTAL SCIENCES
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
ALKALINE EARTH METAL COMPOUNDS
ALPHA DECAY RADIOISOTOPES
AMERICIUM 241
AMERICIUM ISOTOPES
AMINO ACIDS
BUILDINGS
CALCIUM COMPOUNDS
CALCIUM OXIDES
CARBOXYLIC ACIDS
CEREALS
CHALCOGENIDES
CHELATING AGENTS
DRUGS
DTPA
ENVIRONMENTAL TRANSPORT
GRAMINEAE
GRASS
GREENHOUSES
HEAVY NUCLEI
ISOTOPES
MASS TRANSFER
NUCLEI
ODD-EVEN NUCLEI
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLANTS
RADIOISOTOPES
RADIONUCLIDE KINETICS
RADIONUCLIDE MIGRATION
RADIOPROTECTIVE SUBSTANCES
RESPONSE MODIFYING FACTORS
RICE
ROOT ABSORPTION
SOILS
UPTAKE
YEARS LIVING RADIOISOTOPES