Specific activity and activity ratios of radionuclides in soil collected about 20km from the Fukushima Daiichi Nuclear Power Plant: Radionuclide release to the south and southwest

Keiko Tagami*, Shigeo Uchida, Yukio Uchihori, Nobuyoshi Ishii, Hisashi Kitamura, Yoshiyuki Shirakawa

*この研究の対応する著者

研究成果: Article査読

85 被引用数 (Scopus)

抄録

Soil samples at different depths (0-2, 5-7 and 10-12cm) were collected from J Village, about 20km south of Fukushima Daiichi Nuclear Power Plant (FNPP) to determine their radionuclide specific activities and activity ratios. The concentrations and activity ratios of 131I, 134, 136, 137Cs and 129mTe were obtained, but only trace amounts of 95Nb, 110mAg and 140La were detected which were too low to provide accurate concentrations. Radionuclides such as 95Zr, 103, 106Ru and 140Ba that were found in Chernobyl fallout, were not found in these soil samples. This suggests that noble gasses and volatile radionuclides predominated in the releases from FNPP to the terrestrial environment. The average activity ratios of 131I/ 137Cs, 134Cs/ 137Cs, 136Cs/ 137Cs and 129mTe/ 137Cs were 55, 0.90, 0.22 and 4.0 (corrected to March 11, 2011) in the 0-2cm soil samples of April 20 and 28, 2011.

本文言語English
ページ(範囲)4885-4888
ページ数4
ジャーナルScience of the Total Environment
409
22
DOI
出版ステータスPublished - 2011 10 15
外部発表はい

ASJC Scopus subject areas

  • 環境工学
  • 環境化学
  • 廃棄物管理と処理
  • 汚染

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