Analysis of cesium isotope compositions in environmental samples by thermal ionization mass spectrometry – 1. A preliminary study for source analysis of radioactive contamination in Fukushima prefecture
Yuji ShibaharaKyoto University Research Reactor Institute, 2, Asashiro-Nishi, Kumatori-cho, Sennan, Osaka 590-0494, JapanTakumi KubotaKyoto University Research Reactor Institute, 2, Asashiro-Nishi, Kumatori-cho, Sennan, Osaka 590-0494, JapanToshiyuki FujiiKyoto University Research Reactor Institute, 2, Asashiro-Nishi, Kumatori-cho, Sennan, Osaka 590-0494, JapanSatoshi FukutaniKyoto University Research Reactor Institute, 2, Asashiro-Nishi, Kumatori-cho, Sennan, Osaka 590-0494, JapanTomoko OhtaDepartment of Engineering, Hokkaido University, Kita 8, Nishi 5, Kita-ku, Sapporo, Hokkaido 060-8628, JapanKoichi TakamiyaKyoto University Research Reactor Institute, 2, Asashiro-Nishi, Kumatori-cho, Sennan, Osaka 590-0494, JapanRyo OkumuraKyoto University Research Reactor Institute, 2, Asashiro-Nishi, Kumatori-cho, Sennan, Osaka 590-0494, JapanSatoshi MizunoNuclear Power Safety Division, Fukushima Prefectural Government, 8-2 Nakamachi, Fukushima, Fukushima 960-8043, JapanHajimu YamanaKyoto University Research Reactor Institute, 2, Asashiro-Nishi, Kumatori-cho, Sennan, Osaka 590-0494, Japan
2014en
ABI
Аннотация
Cesium was recovered from plant samples obtained from Fukushima prefecture. The isotopic ratios of 134Cs/137Cs and 135Cs/137Cs were analyzed by thermal ionization mass spectrometry with a single filament method using a TaO activator. Samples containing 5 Bq of 137Cs were analyzed with typical analytical errors of approximately 0.5% for 134Cs/137Cs and approximately 0.1% for 135Cs/137Cs. Measurements of both ratios showed profiles that were characteristic of the measurements of among other environmental samples reported in the literature. The results showed the isotopic ratios of 134Cs/137Cs and 135Cs/137Cs were applicable for the source analysis of radioactive Cs in Fukushima prefecture.
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