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Takahashi, Yoshio*; Fan, Q.*; Suga, Hiroki*; Tanaka, Kazuya; Sakaguchi, Aya*; Takeichi, Yasuo*; Ono, Kanta*; Mase, Kazuhiko*; Kato, Kenji*; Kanivets, V. V.*
Scientific Reports (Internet), 7(1), p.12407_1 - 12407_11, 2017/09
Times Cited Count:28 Percentile:67.08(Multidisciplinary Sciences)We focused on factors controlling partition of radiocesium on particulate matters and sediments in rivers of Fukushima and Chernobyl. Radiocesium is more soluble in the Pripyat River (Chernobyl) due to weaker interaction of radiocesium with clay minerals caused by the inhibition effect of the adsorbed humic substances. In contrast, particulate matters and sediments in the Kuchibuto River (Fukushima) display high adsorption affinity with lesser inhibition effect of adsorbed humic substances. This difference is possibly governed by the geology and soil type of provenances surrounding both catchments.
Honda, Maki; Martschini, M.*; Steier, P.*; Golser, R.*; Kanivets, V.*; Rahman, I. M. M.*; Yamasaki, Shinya*; Sakaguchi, Aya*
no journal, ,
A new analytical method for Sr utilizing accelerator mass spectrometry (AMS) achieved better detection limits (1/10 of 0.1 mBq) than conventional -ray detection methods. In order to demonstrate the applicability of the AMS method to environmental samples of various properties, the present study analyzed impurity-rich water samples collected from the cooling water supply ponds of the Chornobyl NPP. The Sr/Sr atomic ratio of the water samples (evaluated by -ray detection and ICP-MS), the expected detection limit, and the analysis method are reported in this meeting. Furthermore, the adaptability of the AMS method for Sr concentration (Bq/L) in water samples will be demonstrated by comparing the AMS method with the -ray detection method.