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Monitoring low-radioactivity caesium in Fukushima waters
Akiko Kitajima1, Hiroshi Ogawa, Takeshi Kobayashi
1Nanosystem Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki, Japan. a-kitajima@aist.go.jp hisashi.tanaka@aist.go.jp.
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 (133)Cs concentrations and radioactive caesium amounts.
