Role of natural organic matter on iodine and (239)(,240)Pu distribution and mobility in environmental samples from the northwestern Fukushima Prefecture, Japan

Journal of Environmental Radioactivity
Chen XuP H Santschi

Abstract

In order to assess how environmental factors are affecting the distribution and migration of radioiodine and plutonium that were emitted from the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident, we quantified iodine and (239,240)Pu concentration changes in soil samples with different land uses (urban, paddy, deciduous forest and coniferous forest), as well as iodine speciation in surface water and rainwater. Sampling locations were 53-63 km northwest of the FDNPP within a 75-km radius, in close proximity of each other. A ranking of the land uses by their surface soil (<4 cm) stable (127)I concentrations was coniferous forest > deciduous forest > urban > paddy, and (239,240)Pu concentrations ranked as deciduous forest > coniferous forest > paddy ≥ urban. Both were quite distinct from that of (134)Cs and (137)Cs: urban > coniferous forest > deciduous forest > paddy, indicating differences in their sources, deposition phases, and biogeochemical behavior in these soil systems. Although stable (127)I might not have fully equilibrated with Fukushima-derived (129)I, it likely still works as a proxy for the long-term fate of (129)I. Surficial soil (127)I content was well correlated to soil organic matter (SOM) content, regardle...Continue Reading

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Citations

May 29, 2018·Environmental Science and Pollution Research International·Marzena Mikos-SzymańskaJoanna Gluzińska
Jan 6, 2018·Environmental Science. Processes & Impacts·O S HumphreyM J Watts
Jul 22, 2019·Journal of Environmental Radioactivity·Dien LiPeter H Santschi
May 12, 2019·The Science of the Total Environment·Peng LinPeter H Santschi
May 17, 2018·Environmental Science & Technology·Keith D MorrisonMavrik Zavarin
Oct 27, 2021·The Science of the Total Environment·Paulina PisarekIsabelle Le Hécho

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