Depth profiles of radioactive cesium and iodine released from the Fukushima Daiichi Nuclear Power Plant and their transfer to the agricultural crops

In order to understand the behavior of the radionuclide released from the Fukushima Daiichi nuclear power plant, we have measured depth distributions of radioactive cesium and iodine in different agricultural fields and forests. Our results demonstrate that more than 90% radionuclides were distributed from the surface to 6 cm in depth. It is important to investigate transfer of the radionuclide to the agricultural crops. In this study, we have also determined transfer factors of radiocesium to agricultural crops such as cucumbers, tomatoes, eggplants and green peppers using the soils collected in Fukushima prefecture. (author)