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Examination of solid phase extraction of $$^{90}$$Sr in bones for ICP-MS analysis

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

Strontium-90 ($$^{90}$$Sr) is one of an artificial radionuclide after the Fukushima-Daiichi Nuclear Power Plant accident. The ICP-MS system for $$^{90}$$Sr have been developed. The ICP-MS system could apply to measurement of $$^{90}$$Sr in soils and water. In this study, solid phase extraction method of $$^{90}$$Sr was optimized the ICP-MS system for bones. After MW digestion, fish bone was dissolved in 2.6 M nitric acid. Sr resin was used for solid phase extraction of $$^{90}$$Sr in a flow-injection system. Sr and interference elements were determined with ICP-MS. Chemical yield of Sr was over 90% in the solid phase extraction system. Interference elements were removed in the extraction. The extraction method could applied to the ICP-MS system for $$^{90}$$Sr. The method required only 30 minutes. The ICP-MS system would be rapid method for $$^{90}$$Sr measurement in bones.

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