Monitoring low-radioactivity caesium in Fukushima waters
Abstract
A new monitoring system has been established to assess low-level radioactive caesium in Fukushima waters directly using caesium adsorbents: plastic containers, U8 containers, and a germanium (Ge) detector container packed with nanoparticle–Prussian blue (PB) immobilized on a polymer. The results show that the calibration coefficient for a flow rate of 0.3 L min−1 was 1.27 in Fukushima waters for germanium semiconductor scintillations related to 133Cs concentrations and radioactive caesium amounts.