Post Fukushima accident 129I concentrations in the North Pacific Ocean

The ongoing public concern about the Fukushima nuclear accident’s real consequences determined us to start a new Accelerator Mass Spectrometry study of 129I concentrations in the North Pacific Ocean. Our results show that currently, the radioiodine 129 concentrations from coastal Japanese sea water...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms Beam interactions with materials and atoms, 2019-01, Vol.438, p.107-112
Main Author: Stan-Sion, C.
Format: Article
Language:English
Subjects:
129I
Accelerator mass spectrometry
Fukushima
North Pacific Ocean
Nuclear pollution
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Summary:The ongoing public concern about the Fukushima nuclear accident’s real consequences determined us to start a new Accelerator Mass Spectrometry study of 129I concentrations in the North Pacific Ocean. Our results show that currently, the radioiodine 129 concentrations from coastal Japanese sea water samples are in the range of (0.9–1.6) × 108 atoms L−1. Higher 129I concentrations of 6.4 × 108 atoms L−1 have been found in the Tadami River, located close to the damaged nuclear reactors. For the North Pacific and all the way into the western shore line we found to have now much lower concentrations, with an average of 2.5 × 107 atoms L−1. Therefore, Fukushima and its vicinities remain an isolated area of nuclear pollution.
ISSN:0168-583X
1872-9584
DOI:10.1016/j.nimb.2018.07.007