Initial Interaction of ¹³⁷Cs with Soils

Abstract

It is critical to understand the physicochemical behaviour of Cs in soil in order to progress the decontamination of soils which were contaminated by nuclear power plant accident and to improve the reliability of safety assessment of used nuclear fuel disposal. In this paper, the initial interactions of ¹³⁷Cs with soils, which were sampled in Fukushima 38 days after Fukushima Accident, were investigated with sequential extraction method. It was found that there were fast and slow processes of fixation of ¹³⁷Cs in clay minerals and that the organic substances might play an important role on kinetics of ¹³⁷Cs in soils.