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Retention of potentially mobile radiocesium in forest surface soils affected by the Fukushima nuclear accident
The fate of (137)Cs derived from the Fukushima nuclear accident fallout and associated radiological hazards are largely dependent on its mobility in the surface soils of forest ecosystems. Thus, we quantified microbial and adsorptive retentions of (137)Cs in forest surface (0–3 cm) soils. The K(2)SO...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3525936/ https://www.ncbi.nlm.nih.gov/pubmed/23256039 http://dx.doi.org/10.1038/srep01005 |
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author | Koarashi, Jun Moriya, Koichi Atarashi-Andoh, Mariko Matsunaga, Takeshi Fujita, Hiroki Nagaoka, Mika |
author_facet | Koarashi, Jun Moriya, Koichi Atarashi-Andoh, Mariko Matsunaga, Takeshi Fujita, Hiroki Nagaoka, Mika |
author_sort | Koarashi, Jun |
collection | PubMed |
description | The fate of (137)Cs derived from the Fukushima nuclear accident fallout and associated radiological hazards are largely dependent on its mobility in the surface soils of forest ecosystems. Thus, we quantified microbial and adsorptive retentions of (137)Cs in forest surface (0–3 cm) soils. The K(2)SO(4) extraction process liberated 2.1%–12.8% of the total (137)Cs from the soils. Two soils with a higher content of clay- and silt-sized particles, organic carbon content, and cation exchange capacity showed higher (137)Cs extractability. Microbial biomass was observed in all of the soils. However, the (137)Cs extractability did not increase after destruction of the microbial biomass by chloroform fumigation, providing no evidence for microbial retention of the Fukushima-fallout (137)Cs. The results indicate that uptake of (137)Cs by soil microorganisms is less important for retention of potentially mobile (137)Cs in the forest surface soils compared to ion-exchange adsorption on non-specific sites provided by abiotic components. |
format | Online Article Text |
id | pubmed-3525936 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-35259362012-12-19 Retention of potentially mobile radiocesium in forest surface soils affected by the Fukushima nuclear accident Koarashi, Jun Moriya, Koichi Atarashi-Andoh, Mariko Matsunaga, Takeshi Fujita, Hiroki Nagaoka, Mika Sci Rep Article The fate of (137)Cs derived from the Fukushima nuclear accident fallout and associated radiological hazards are largely dependent on its mobility in the surface soils of forest ecosystems. Thus, we quantified microbial and adsorptive retentions of (137)Cs in forest surface (0–3 cm) soils. The K(2)SO(4) extraction process liberated 2.1%–12.8% of the total (137)Cs from the soils. Two soils with a higher content of clay- and silt-sized particles, organic carbon content, and cation exchange capacity showed higher (137)Cs extractability. Microbial biomass was observed in all of the soils. However, the (137)Cs extractability did not increase after destruction of the microbial biomass by chloroform fumigation, providing no evidence for microbial retention of the Fukushima-fallout (137)Cs. The results indicate that uptake of (137)Cs by soil microorganisms is less important for retention of potentially mobile (137)Cs in the forest surface soils compared to ion-exchange adsorption on non-specific sites provided by abiotic components. Nature Publishing Group 2012-12-19 /pmc/articles/PMC3525936/ /pubmed/23256039 http://dx.doi.org/10.1038/srep01005 Text en Copyright © 2012, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-sa/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-ShareALike 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/ |
spellingShingle | Article Koarashi, Jun Moriya, Koichi Atarashi-Andoh, Mariko Matsunaga, Takeshi Fujita, Hiroki Nagaoka, Mika Retention of potentially mobile radiocesium in forest surface soils affected by the Fukushima nuclear accident |
title | Retention of potentially mobile radiocesium in forest surface soils affected by the Fukushima nuclear accident |
title_full | Retention of potentially mobile radiocesium in forest surface soils affected by the Fukushima nuclear accident |
title_fullStr | Retention of potentially mobile radiocesium in forest surface soils affected by the Fukushima nuclear accident |
title_full_unstemmed | Retention of potentially mobile radiocesium in forest surface soils affected by the Fukushima nuclear accident |
title_short | Retention of potentially mobile radiocesium in forest surface soils affected by the Fukushima nuclear accident |
title_sort | retention of potentially mobile radiocesium in forest surface soils affected by the fukushima nuclear accident |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3525936/ https://www.ncbi.nlm.nih.gov/pubmed/23256039 http://dx.doi.org/10.1038/srep01005 |
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