Analysis of particulate distributed across Fukushima Prefecture: attributing provenance to the 2011 Fukushima Daiichi Nuclear Power Plant accident or an alternate emission source.



In contrast to investigating the distribution (and state) of these high-activity fission products, this study examined fragments of transition metals, rare earth elements and actinides found adhered to a diverse range of organic samples collected from localities across the radiologically contaminated Fukushima Prefecture. As well as varying enormously in their elemental composition, the entrapped particulates comprised a wide size range (150 nm to >10 μm). For particulate of certain compositions (including Ag, Ce, Sm, and Au), a correlation was observed between their size and the distance at which they were encountered from the FDNPP. While a trend was apparent for these and several other composition particles, other materials (including Zr, Pb, Sn, and Ba) could not be described by such a strongly-negative linear trend. Although a Fukushima provenance could be apportioned to a component of the material, an alternate source is necessary to account for a significant inventory of the particulate material. While contrasting provenances may exist, both the size and composition of this particulate could represent potentially significant health implications for exposed populations.
Date made available4 Jun 2019
PublisherMendeley Data

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