Variability of 137Cs and 40K soil-to-fruit transfer factor in tropical lemon trees during the fruit development period
- Velasco, Ricardo Hugo
- Cid, A. S.
- Anjos, R. M.
- Zamboni, C. B.
- Rizzotto, Marcos Gregorio
- Valladares, Diego Leonardo
- Juri Ayub, Jimena
DOIAbstract
In this investigation we evaluate the soil uptake of 137Cs and 40K by tropical plants and their consequent translocation to fruits, by calculating the soil-to-fruit transfer factors defined as Fv = [concentration of radionuclide in fruit (Bq kg-1 dry mass)/concentration of radionuclide in soil (Bq kg-1 dry mass in upper 20 cm)]. In order to obtain Fv values, the accumulation of these radionuclides in fruits of lemon trees (Citrus limon B.) during the fruit growth was measured. A mathematical model was calibrated from the experimental data allowing simulating the incorporation process of these radionuclides by fruits. Although the fruit incorporates a lot more potassium than cesium, both radionuclides present similar absorption patterns duri...
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