Trial of rapid measurement for Sr in animal bone by ICP-MS

Koarai, Kazuma   ; Matsueda, Makoto   ; Yanagisawa, Kayo*; Fujiwara, Kenso ; Kitamura, Akihiro   

Strontium-90 and Y, its daughter nuclide, adverse effects on the bone marrow. Monitring of Sr have been required after the Fukushima-Daiichi Nuclear Power Plant. However, radioactivity measurement method requires a complicated separation and a time-consuming -ray measurement. ICP-MS system has been applied to Sr contamination survey of soil and water samples. We applied the ICP-MS system for the bones for the first time. In this study, reference bone was used as measurement samples. After sample preparation, Sr was determined using ICP-MS system with cascade separation steps based on on-line column separation and oxygen reaction. Strontium-90 in the bones was successfully separated from Ca, Ba, Y, Zr, Fe, and Ge, which interfered in ICP-MS measurement, in the separation steps. We found that the ICP-MS system could be applied to the rapid measurement of Sr in the bones.