Gaseous radioiodine transport in the air-forage-cow-milk system. [/sup 131/I transport]
To study the transport of /sup 131/I in the air-forage-cow milk system, a gaseous form of /sup 131/I was released over a field of growing alfalfa which also contained some baled hay and dairy cows in pens. Some of the alfalfa was converted to hay and fed to cows, and some was used as green chop for other cows and goats. The results of this experiment suggest that the deposition velocity of gaseous iodine is much less than that for iodine bound to particulates; that cows ingesting hay secrete a higher percentage of /sup 131/I in milk than cows ingesting green chop; that gaseous forms do not penetrate hay bales to any great extent; that the gaseous form is transferred to milk in a manner similar to particulate forms; that ingestion of contaminated forage results in 80 times as much /sup 131/I transfer to milk as does inhalation exposure to the same cloud; and that goats transfer /sup 131/I from forage to milk more efficiently than do dairy cows. (auth)
- Research Organization:
- Environmental Monitoring and Support Lab., Las Vegas, Nev. (USA)
- DOE Contract Number:
- AT(26-1)-539
- OSTI ID:
- 7363282
- Report Number(s):
- EMSL-LV-539-2
- Country of Publication:
- United States
- Language:
- English
Similar Records
Scoping calculation for components of the cow-milk dose pathway for evaluating the dose contribution from iodine-131. Hanford Environmental Dose Reconstruction Project: Dose code recovery activities
Effect of Changes in Forage Ration on the Thyroidal I131 Release Rates of Young Dairy Animals
Related Subjects
Atmospheric-- Radioactive Materials Monitoring & Transport-- (-1989)
510302 -- Environment
Terrestrial-- Radioactive Materials Monitoring & Transport-- Terrestrial Ecosystems & Food Chains-- (-1987)
54 ENVIRONMENTAL SCIENCES
ALFALFA
ANIMAL FEEDS
ANIMALS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOLOGICAL MATERIALS
BIOMASS
BODY FLUIDS
CATTLE
COMPARATIVE EVALUATIONS
COWS
DAYS LIVING RADIOISOTOPES
DISTRIBUTION
DOMESTIC ANIMALS
ENERGY SOURCES
ENVIRONMENT
ENVIRONMENTAL TRANSPORT
FOOD
FOOD CHAINS
FORAGE
GASEOUS WASTES
GOATS
GROUND RELEASE
INGESTION
INTAKE
INTERMEDIATE MASS NUCLEI
IODINE 131
IODINE ISOTOPES
ISOTOPES
LEGUMINOSAE
MAMMALS
MANAGEMENT
MASS TRANSFER
METABOLISM
MILK
NUCLEI
ODD-EVEN NUCLEI
PLANTS
RADIOACTIVITY
RADIOISOTOPES
RADIONUCLIDE KINETICS
RADIONUCLIDE MIGRATION
RENEWABLE ENERGY SOURCES
RUMINANTS
TISSUE DISTRIBUTION
UPTAKE
VERTEBRATES
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES