Journal
JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY
Volume 51, Issue 5, Pages 575-579Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/00223131.2014.891954
Keywords
cesium; environmental sample; gamma ray; isotope ratio; thermal ionization mass spectrometry
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Funding
- KUR Research Program for Scientific Basis of Nuclear Safety
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Cesium was recovered from plant samples obtained from Fukushima prefecture. The isotopic ratios of Cs-134/Cs-137 and Cs-135/Cs-137 were analyzed by thermal ionization mass spectrometry with a single filament method using a TaO activator. Samples containing 5 Bq of Cs-137 were analyzed with typical analytical errors of approximately 0.5% for Cs-134/Cs-137 and approximately 0.1% for Cs-135/Cs-137. 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 Cs-134/Cs-137 and Cs-135/Cs-137 were applicable for the source analysis of radioactive Cs in Fukushima prefecture.
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