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

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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 7 (2016), S. 1807-1810. DOI: http://dx.doi.org/10.1007/s10967-015-4352-6

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Sum total of downloads: 139




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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 (T eff) 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 T eff 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.
License of this version: CC BY 4.0 Unported
Document Type: article
Publishing status: publishedVersion
Issue Date: 2016
Appears in Collections:Fakultät für Mathematik und Physik

distribution of downloads over the selected time period:

downloads by country:

pos. country downloads
total perc.
1 image of flag of Germany Germany 121 87.05%
2 image of flag of No geo information available No geo information available 3 2.16%
3 image of flag of Japan Japan 2 1.44%
4 image of flag of China China 2 1.44%
5 image of flag of Austria Austria 2 1.44%
6 image of flag of United States United States 1 0.72%
7 image of flag of Poland Poland 1 0.72%
8 image of flag of Peru Peru 1 0.72%
9 image of flag of India India 1 0.72%
10 image of flag of Hungary Hungary 1 0.72%
    other countries 4 2.88%

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