Publication Laka-library:
Transfer of radionuclides through soilplant pathway (1984)
| Author | Watabe, Uckida, Kamada |
| Date | October 1984 |
| Classification | 6.01.3.90/04 (NUCLEAR SAFETY - SOURCETERM) |
| Front | 
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From the publication:
Transfer of Radionuclides through Soil-Plant Pathway INTRODUCTION Airborne radionuclides such as 60Co and 137Cs discharged from stacks of nuclear power plants are brought down to plants and soil in particulate form. Direct deposition should be one of the significant pathways for radioactive contamination of plants. Soil to plant pathway, i.e. root uptake pathway, is another one especially for long-lived radionuclides although root uptake is the subsidiary mode of entry into plants. It is considered that the amount of radionuclides taken by root should vary with the concentration in soil solution, which may depend on the leachability of particle-associated radionuclides and also on the solubility of radionuclides related to the sorption capacity of soil particles. In this paper, a simplified mathematical model is presented for estimating the transfer of 60Co and 137Cs through the litter-soil-plant pathway. Key parameters in the predictive equations such as leaching rate (kw). uptake rate by plants (kb) and distribution coefficient (Kd) are determined through a case study and/or experimentally.
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