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Strontium-90 measurement in trace amount of hard tissues for distribution analysis

Koarai, Kazuma ; Matsueda, Makoto; Aoki, Jo; Yanagisawa, Kayo*; Fujiwara, Kenso; Terashima, Motoki; Kino, Yasushi*; Oka, Toshitaka; Okutsu, Kenichi*; Yamashita, Takuma*; Takahashi, Atsushi*; Suzuki, Toshihiko*; Shimizu, Yoshinaka*; Chiba, Mirei*; Osaka, Ken*; Sasaki, Keiichi*; Sekine, Tsutomu*; Fukumoto, Manabu*; Shinoda, Hisashi*; Kitamura, Akihiro; Abe, Hironobu

We demonstrated a method of $$^{90}$$Sr measurement in small pieces of hard tissues with radioactivity measurement or ICP-MS measurement. Interference elements of the measurements were removed by chemical separation. We could determine $$^{90}$$Sr in 0.1 g of hard tissues by radioactivity measurement method and ICP-MS method. Limit of detection of the ICP-MS method was lower than that of the radioactivity measurement. The ICP-MS method is adequate method for distribution analysis of $$^{90}$$Sr in the hard tissues.

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