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Plant uptake of /sup 237/Np, /sup 239/ /sup 240/Pu, /sup 241/Am, and /sup 244/Cm from soils representing major food production areas of the United States

Journal Article · · Soil Sci.; (United States)
OSTI ID:5897286
; ; ; ;

Crops of peas, soybeans, tomatoes, and wheat were grown in seven different soils uniformly contaminated with mixtures of /sup 237/Np, /sup 239/ /sup 240/Pu, /sup 241/Am, and /sup 244/Cm. The plant uptake experiments were performed in 200-liter containers, to simulate field conditions. Crop yields varied with the fertility conditions of the soils. Differences in soil properties were a major cause of variability in the concentration ratios (CR) that measure the transuranic element uptake by food crop plants through root systems. Root uptake of /sup 239/ /sup 240/Pu was lowest, with CR values for vegetative parts of plants ranging from 10/sup -6/ to 10/sup -4/. The CR values for /sup 241/Am and /sup 244/Cm were essentially the same, ranging from 10/sup -5/ to 10/sup -2/. The CR values for /sup 237/Np in vegetative parts ranged from 10/sup -4/ to 10/sup -1/. The CR values for seed, grain, and fruit parts of plants generally were a factor of 10 lower than values for foliage.

Research Organization:
Univ. of California, Los Angeles
OSTI ID:
5897286
Journal Information:
Soil Sci.; (United States), Journal Name: Soil Sci.; (United States) Vol. 132:1; ISSN SOSCA
Country of Publication:
United States
Language:
English

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Related Subjects

510301 -- Environment
Terrestrial-- Radioactive Materials Monitoring & Transport-- Soil-- (-1987)
510302* -- Environment
Terrestrial-- Radioactive Materials Monitoring & Transport-- Terrestrial Ecosystems & Food Chains-- (-1987)
54 ENVIRONMENTAL SCIENCES
ABSORPTION
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
AMERICIUM 241
AMERICIUM ISOTOPES
CEREALS
CURIUM 244
CURIUM ISOTOPES
ENVIRONMENTAL TRANSPORT
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FOOD
GRAMINEAE
GRASS
HEAVY NUCLEI
ISOTOPES
MASS TRANSFER
NEPTUNIUM 237
NEPTUNIUM ISOTOPES
NUCLEI
ODD-EVEN NUCLEI
PEAS
PLANTS
PLUTONIUM 239
PLUTONIUM 240
PLUTONIUM ISOTOPES
RADIOISOTOPES
RADIONUCLIDE KINETICS
RADIONUCLIDE MIGRATION
ROOT ABSORPTION
SOILS
SOYBEANS
TOMATOES
UPTAKE
VEGETABLES
WHEAT
YEARS LIVING RADIOISOTOPES