Effective and ecological half-lives of 90Sr and 137Cs observed in wheat and rice in Japan

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Autoren

  • Stefan Merz
  • Katsumi Shozugawa
  • Georg Steinhauser

Organisationseinheiten

Externe Organisationen

  • Technische Universität Wien (TUW)
  • University of Tokyo (UTokyo)
  • Colorado State University
  • Fukushima University
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Details

OriginalspracheEnglisch
Seiten (von - bis)1807-1810
Seitenumfang4
FachzeitschriftJournal of Radioanalytical and Nuclear Chemistry
Jahrgang307
Ausgabenummer3
Frühes Online-Datum9 Aug. 2015
PublikationsstatusVeröffentlicht - 1 März 2016

Abstract

Published pre-Fukushima food monitoring data from 1963 to 1995 were used to study the long-term presence of 137Cs and 90Sr in rice and wheat. Effective half-lives (Teff) were calculated for rice (137Cs: 5.6 years; 90Sr: 6.7 years) and wheat (137Cs: 3.5 years; 90Sr: 6.2 years), respectively. In rice, 137Cs exhibits a longer Teff because putrefaction processes will lead to the formation of NH4 + ions that are efficient ion exchangers for mineral-adsorbed cesium ions, hence making it more readily available to the plant. Knowledge on the long-term behavior of radiocesium and radiostrontium will be important for Japanese food-safety campaigns after the Fukushima nuclear accident.

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Effective and ecological half-lives of 90Sr and 137Cs observed in wheat and rice in Japan. / Merz, Stefan; Shozugawa, Katsumi; Steinhauser, Georg.
in: Journal of Radioanalytical and Nuclear Chemistry, Jahrgang 307, Nr. 3, 01.03.2016, S. 1807-1810.

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Merz S, Shozugawa K, Steinhauser G. Effective and ecological half-lives of 90Sr and 137Cs observed in wheat and rice in Japan. Journal of Radioanalytical and Nuclear Chemistry. 2016 Mär 1;307(3):1807-1810. Epub 2015 Aug 9. doi: 10.1007/s10967-015-4352-6
Merz, Stefan ; Shozugawa, Katsumi ; Steinhauser, Georg. / Effective and ecological half-lives of 90Sr and 137Cs observed in wheat and rice in Japan. in: Journal of Radioanalytical and Nuclear Chemistry. 2016 ; Jahrgang 307, Nr. 3. S. 1807-1810.
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abstract = "Published pre-Fukushima food monitoring data from 1963 to 1995 were used to study the long-term presence of 137Cs and 90Sr in rice and wheat. Effective half-lives (Teff) were calculated for rice (137Cs: 5.6 years; 90Sr: 6.7 years) and wheat (137Cs: 3.5 years; 90Sr: 6.2 years), respectively. In rice, 137Cs exhibits a longer Teff because putrefaction processes will lead to the formation of NH4 + ions that are efficient ion exchangers for mineral-adsorbed cesium ions, hence making it more readily available to the plant. Knowledge on the long-term behavior of radiocesium and radiostrontium will be important for Japanese food-safety campaigns after the Fukushima nuclear accident.",
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AU - Steinhauser, Georg

N1 - The authors are indebted to M. Komamura and colleagues whose pioneering work has made this study possible. This work was supported by JSPS KAKENHI (Grant Number 25870158), from CDC NIOSH Mountain and Plains Education and Research Center (Grant Number T42OH009229-07), and the US Nuclear Regulatory Commission (NRC) (Grant Number NRC-HQ-12-G-38- 0044). Its contents are solely the responsibility of the authors and do not necessarily represent the official views of the CDC NIOSH and MAP ERC.

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N2 - Published pre-Fukushima food monitoring data from 1963 to 1995 were used to study the long-term presence of 137Cs and 90Sr in rice and wheat. Effective half-lives (Teff) were calculated for rice (137Cs: 5.6 years; 90Sr: 6.7 years) and wheat (137Cs: 3.5 years; 90Sr: 6.2 years), respectively. In rice, 137Cs exhibits a longer Teff because putrefaction processes will lead to the formation of NH4 + ions that are efficient ion exchangers for mineral-adsorbed cesium ions, hence making it more readily available to the plant. Knowledge on the long-term behavior of radiocesium and radiostrontium will be important for Japanese food-safety campaigns after the Fukushima nuclear accident.

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