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Cherenkov counting of 90Sr and 90Y in bark and leaf samples collected around Fukushima Daiichi Nuclear Power Plant
Ist Teil von
Journal of radioanalytical and nuclear chemistry, 2015, Vol.303 (1), p.39-46
Ort / Verlag
Dordrecht: Springer Netherlands
Erscheinungsjahr
2015
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
The radioactivity of
90
Sr and
137
Cs in environmental samples, bark and leaf, collected around the Fukushima Daiichi Nuclear Power Plant in May 2013 was determined with the aim of investigating the migration of both nuclides using their radioactivity ratio. The radioactivity of
90
Sr was determined by using Cherenkov counting of
90
Y after purification using Sr resin and that of
137
Cs was determined by γ-spectrometry. Quench correction in Cherenkov counting was investigated by measurements of samples spiked with purified
90
Y revealed that the radioactivity could be evaluated without quench correction. The radioactivity ratio of
90
Sr to
137
Cs in bark samples of 4.2 × 10
−3
and 1.2 × 10
−2
was compared with the results from soil samples collected in July 2011 to show that the migration of
90
Sr was slower than
137
Cs in bark and tree.