Iodine Transport Through the Soil-Plant-Atmosphere Continuum

by B. D. Amiro, Atomic Energy of Canada Ltd Research, Co, Canada,
S. C. Sheppard, Atomic Energy of Canada Ltd Research, Co, Canada,
M. I. Sheppard, Atomic Energy of Canada Ltd Research, Co, Canada,



Document Type: Proceeding Paper

Part of: High Level Radioactive Waste Management 1990

Abstract: The environmental assessment of the geological disposal of Canadian nuclear fuel waste involves transport modelling of radionuclides through the biosphere. Iodine-129 is a major fission product with a long half-life and is readily transported through the geosphere and biosphere. We have been studying mechanisms of iodine transport through the soil-plant-atmosphere continuum to identify important pathways and to quantify transfer parameters. Here we describe results of some of the experiments, and the pathways considered in our biosphere transport model. The model will be used to assess the dose of 129I to humans from a deep geological disposal vault.

Subject Headings: Radioactive wastes | Ecosystems | Continuum mechanics | Geology | Fuels | Waste disposal | Radioactive materials

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