(Table 1) Soil physical parameters of sediments obtained in the Lüchow-Dannenberg district, Lower Saxony

The mobility of the radionuclides of the elements Sr, I, Cs and Ce were investigated for three typical sands of Northern Germany under simulated natural, undersaturated flow conditions. The laboratory experiments include the determination of the flow parameters of the seepwater movement as well as the transport velocities of the radionuclides in the sands. For the three selected sands, the following mobility sequence/order has been established for the radionuclides: I < Sr < Cs < Ce

针对德国北部三种典型砂土，在模拟自然不饱和渗流条件下，对锶（Sr）、碘（I）、铯（Cs）与铈（Ce）四种元素的放射性核素迁移行为开展了研究。本次实验室实验涵盖渗流运动的流动参数测定，以及各放射性核素在砂土中的迁移速率测试。针对所选的三种砂土，已确定各放射性核素的迁移顺序为：I < Sr < Cs < Ce