Abstract
To improve the understanding of the environmental 14C behaviour, the International Atomic Energy Agency (IAEA) coordinated a Tritium and C-14 Working Group (T&C WG) in its EMRAS (Environmental Modelling for Radiation Safety) programme. One of the scenarios developed in the frame of T&C WG involved the prediction of time dependent 14C concentrations in potato plants. The experimental data used in the scenario were obtained from a study in which potatoes (Solanum tuberosum cv. Romano) were exposed to atmospheric 14CO2 in a wind tunnel. The observations were used to test models that predict temporal changes in 14C concentrations in leaves at each sampling time for each experiment and 14C concentrations in tubers at the final harvest of each experiment. The experimental data on 14C dynamics in leaves are poorly reproduced by most of the models, but the predicted concentrations in tubers are in good agreement with the observations.
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