Details
| Original language | English |
|---|---|
| Pages (from-to) | 201-208 |
| Number of pages | 8 |
| Journal | Applied Geochemistry |
| Volume | 85 |
| Early online date | 8 Jun 2017 |
| Publication status | Published - Oct 2017 |
Abstract
In June 2013 and July 2014, soil samples were collected from unremediated locations within Fukushima prefecture, with special focus on the Fukushima exclusion zone. The soil samples were analyzed for radiocesium by gamma spectroscopy, and then 90Sr by liquid scintillation counting (LSC) after ion specific extraction chromatography. Activity concentrations are compared between sampling years, sampling sites, and soil layers, revealing a general downward trend in activities but also some inconsistencies. Maximum activity concentrations of 137Cs in soil were found in close vicinity of the gate of Fukushima Daichi Nuclear Power Plant and reached up to 106 Bq·kg−1 in 2013. Thirteen months later, these maximum levels were lower by a factor of at least 5. Activity ratios of 90Sr/137Cs were usually around 2 · 10−4, but locally increased to the 10−3 range, and in one spot even to the 10−1 range. Finally, attempts were made to analyze rare radionuclides in environmental samples from this area, in particular tritium (3H) and 60Fe, however no traces were found in the vegetation and soil samples, respectively.
Keywords
- Cs, H (tritium), Fe, Sr, Fukushima nuclear accident, Soil
ASJC Scopus subject areas
- Environmental Science(all)
- Environmental Chemistry
- Environmental Science(all)
- Pollution
- Earth and Planetary Sciences(all)
- Geochemistry and Petrology
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In: Applied Geochemistry, Vol. 85, 10.2017, p. 201-208.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Radionuclide pollution inside the Fukushima Daiichi exclusion zone, part 1
T2 - Depth profiles of radiocesium and strontium-90 in soil
AU - Rosenberg, Brett L.
AU - Ball, Joseph E.
AU - Shozugawa, Katsumi
AU - Korschinek, Gunther
AU - Hori, Mayumi
AU - Nanba, Kenji
AU - Johnson, Thomas E.
AU - Brandl, Alexander
AU - Steinhauser, Georg
N1 - Funding information: This study was supported by JSPS KAKENHI (Grant Number 25870158) as well as Grant Number T42OH009229-07 from CDC NIOSH Mountain and Plains Education and Research Center. Its contents are solely the responsibility of the authors and do not necessarily represent the official views of the CDC NIOSH and MAP ERC. GS gratefully acknowledges funding by the US Nuclear Regulatory Commission (NRC), grant number NRC-HQ-12-G-38-0044. This study was supported by JSPS KAKENHI (Grant Number 25870158 ) as well as Grant Number T42OH009229-07 from CDC NIOSH Mountain and Plains Education and Research Center . Its contents are solely the responsibility of the authors and do not necessarily represent the official views of the CDC NIOSH and MAP ERC. GS gratefully acknowledges funding by the US Nuclear Regulatory Commission (NRC) , grant number NRC-HQ-12-G-38-0044 . Appendix A
PY - 2017/10
Y1 - 2017/10
N2 - In June 2013 and July 2014, soil samples were collected from unremediated locations within Fukushima prefecture, with special focus on the Fukushima exclusion zone. The soil samples were analyzed for radiocesium by gamma spectroscopy, and then 90Sr by liquid scintillation counting (LSC) after ion specific extraction chromatography. Activity concentrations are compared between sampling years, sampling sites, and soil layers, revealing a general downward trend in activities but also some inconsistencies. Maximum activity concentrations of 137Cs in soil were found in close vicinity of the gate of Fukushima Daichi Nuclear Power Plant and reached up to 106 Bq·kg−1 in 2013. Thirteen months later, these maximum levels were lower by a factor of at least 5. Activity ratios of 90Sr/137Cs were usually around 2 · 10−4, but locally increased to the 10−3 range, and in one spot even to the 10−1 range. Finally, attempts were made to analyze rare radionuclides in environmental samples from this area, in particular tritium (3H) and 60Fe, however no traces were found in the vegetation and soil samples, respectively.
AB - In June 2013 and July 2014, soil samples were collected from unremediated locations within Fukushima prefecture, with special focus on the Fukushima exclusion zone. The soil samples were analyzed for radiocesium by gamma spectroscopy, and then 90Sr by liquid scintillation counting (LSC) after ion specific extraction chromatography. Activity concentrations are compared between sampling years, sampling sites, and soil layers, revealing a general downward trend in activities but also some inconsistencies. Maximum activity concentrations of 137Cs in soil were found in close vicinity of the gate of Fukushima Daichi Nuclear Power Plant and reached up to 106 Bq·kg−1 in 2013. Thirteen months later, these maximum levels were lower by a factor of at least 5. Activity ratios of 90Sr/137Cs were usually around 2 · 10−4, but locally increased to the 10−3 range, and in one spot even to the 10−1 range. Finally, attempts were made to analyze rare radionuclides in environmental samples from this area, in particular tritium (3H) and 60Fe, however no traces were found in the vegetation and soil samples, respectively.
KW - Cs
KW - H (tritium)
KW - Fe
KW - Sr
KW - Fukushima nuclear accident
KW - Soil
UR - http://www.scopus.com/inward/record.url?scp=85021066091&partnerID=8YFLogxK
U2 - 10.1016/j.apgeochem.2017.06.003
DO - 10.1016/j.apgeochem.2017.06.003
M3 - Article
AN - SCOPUS:85021066091
VL - 85
SP - 201
EP - 208
JO - Applied Geochemistry
JF - Applied Geochemistry
SN - 0883-2927
ER -