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Field studies of HT behaviour in the environment

Journal Article · · Fusion Technol.; (United States)
OSTI ID:6135139
; ;
The role of vegetation in tritium behaviour was investigated following release of 3.54 TBq HT at a Chalk River experimental field. Results indicated HT oxidation to HTO in soil followed by vegetation uptake and foliar atmospheric water vapour exchange. Vegetation HT deposition velocities measured as tissue-free water tritium (TFWT) in 5 species were 2.3 x 10/sup -8/ to 6 x 10/sup -7/ m s/sup -1/ expressed on a leaf area basis. TFWT loss rates were 5.2 to 8.1% h/sup -1/ from about 12 to 48 h after release with low activity rain and 0.42 to 0.56% h/sup -1/ from about 48 to 335 h. Initial vegetation organically-bound tritium/TFWT ratios were about 0.05 increasing to 16 after 113 days.
Research Organization:
Ontario Hydro Research Div., Toronto, Ontario (CA); Atomic Energy of Canada Ltd., Chalk River Nuclear Labs., Chalk River, Ontario (CA)
OSTI ID:
6135139
Journal Information:
Fusion Technol.; (United States), Journal Name: Fusion Technol.; (United States) Vol. 14:2; ISSN FUSTE
Country of Publication:
United States
Language:
English

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Related Subjects

500300 -- Environment
Atmospheric-- Radioactive Materials Monitoring & Transport-- (-1989)
510300 -- Environment
Terrestrial-- Radioactive Materials Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700206* -- Fusion Power Plant Technology-- Environmental Aspects
AIR POLLUTION MONITORING
ATOMIC ENERGY OF CANADA LTD
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CANADIAN ORGANIZATIONS
CHALK RIVER NUCLEAR LABS
CHEMICAL BONDS
CHEMICAL REACTIONS
DATA
DEPOSITION
DISPERSIONS
ENVIRONMENTAL IMPACTS
ENVIRONMENTAL TRANSPORT
EXPERIMENTAL DATA
FLUIDS
GASES
HYDROGEN ISOTOPES
INFORMATION
ISOTOPES
LEACHATES
LIGHT NUCLEI
MASS TRANSFER
MIXTURES
NATIONAL ORGANIZATIONS
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
OXIDATION
PLANTS
RADIOISOTOPES
RADIONUCLIDE MIGRATION
SOILS
SOLUTIONS
TRITIUM
VAPORS
WATER VAPOR
YEARS LIVING RADIOISOTOPES