Abstract
We analyzed 134Cs, 137Cs and 40K in 96 foodstuffs in supermarkets with high sensitivity over 3 years after Fukushima accident. Milk, yoghurt, rice, tea, salmon, cereal, blueberry, miso, and apples had a trace of 134Cs and 137Cs from 10−3 to 100 Bq/kg, however, some mushrooms that were bought in the outer Fukushima prefecture were contaminated by radioactive cesium over the regulatory limit (100 Bq/kg). In view of the 134Cs/137Cs radioactivity ratio, we can conclude that 137Cs detected in remote areas 300 km or more from Fukushima Nuclear power plant contained activity from Pre-Fukushima events such as Chernobyl accident (1986) and atmospheric nuclear explosions (from 1945).
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References
Steinhauser G, Brandl A, Johnson TE (2014) Comparison of the Chernobyl and Fukushima nuclear accidents: a review of the environmental impacts. Sci Total Environ 470–471:800–817. doi:10.1016/j.scitotenv.2013.10.029
Tagami K, Uchida S, Ishii N, Zheng J (2013) Estimation of Te-132 distribution in Fukushima Prefecture at the early stage of the Fukushima Daiichi Nuclear Power Plant reactor failures. Environ Sci Technol 47(10):5007–5012. doi:10.1021/es304730b
Chino M, Nakayama H, Nagai H, Terada H, Katata G, Yamazawa H (2011) Preliminary estimation of release amounts of 131I and137Cs Accidentally Discharged from the Fukushima Daiichi Nuclear Power Plant into the atmosphere. J Nucl Sci Technol 48(7):1129–1134. doi:10.1080/18811248.2011.9711799
Nishihara K, Yamagishi I, Yasuda K, Ishimori K, Tanaka K, Kuno T, Inada S, Gotoh Y (2012) Radionuclide release to stagnant water in Fukushima-1 Nuclear Power Plant. Trans Atomic Energ Soc Jpn 11(1):13–19. doi:10.3327/taesj.J11.040
Tsumune D, Tsubono T, Aoyama M, Hirose K (2012) Distribution of oceanic 137Cs from the Fukushima Dai-ichi Nuclear Power Plant simulated numerically by a regional ocean model. J Environ Radioactiv 111:100–108. doi:10.1016/j.jenvrad.2011.10.007
Winiarek V, Bocquet M, Saunier O, Mathieu A (2012) Estimation of errors in the inverse modeling of accidental release of atmospheric pollutant: application to the reconstruction of the cesium-137 and iodine-131 source terms from the Fukushima Daiichi power plant. J Geophys Res. doi:10.1029/2011jd016932
Stohl A, Seibert P, Wotawa G, Arnold D, Burkhart JF, Eckhardt S, Tapia C, Vargas A, Yasunari TJ (2012) Xenon-133 and caesium-137 releases into the atmosphere from the Fukushima Dai-ichi nuclear power plant: determination of the source term, atmospheric dispersion, and deposition. Atmos Chem Phys 12(5):2313–2343. doi:10.5194/acp-12-2313-2012
Morino Y, Ohara T, Watanabe M, Hayashi S, Nishizawa M (2013) Episode analysis of deposition of radiocesium from the Fukushima Daiichi nuclear power plant accident. Environ Sci Technol 47(5):2314–2322. doi:10.1021/es304620x
Teppei J, Yasunaria AS, Hayano Ryugo S, Burkhartb John F, Eckhardtb Sabine, Yasunarie Tetsuzo (2011) Cesium-137 deposition and contamination of Japanese soils due to the Fukushima nuclear accident. Proc Nat Acad Sci. doi:10.1073/pnas.1112058108/-/DCSupplemental
Fukushima Association for Securing Safety of Agricultural Products. https://fukumegu.org/ok/kome/
Shiraishi K, Ban-Nai T, Muramatsu Y, Yamamoto M (1999) Comparison of stable cesium and radiocesium on dietary intakes by Japanese subjects using 18 food categories. J Radioanal Nucl Chem 242(3):687–692. doi:10.1007/Bf02347380
Ministry of Health LaW, Japan (2013) National Health and Nutrition Survey
Becker W (2000) Total Diet Studies Examples from Sweden. J Food Compos Anal 13:545–549. doi:10.1006/jfca.2000.0907
Ministry of Education C, Sports, Science and Technology (MEXT), Japan (1982) The guideline of sample pre-treatment for Ge semiconductor defector. vol 14 (in Japanese)
ICRP (1995) Age-dependent doses to the members of the public from intake of radionuclides—part 5 compilation of ingestion and inhalation coefficients (Publication 72). vol 26
Ministry of Health LaW, Japan (2014) The results of surveys on the levels of radioactive cesium in foods (February–March 2014); 1% or below the current regulatory dose limit of 1 millisieverts per year (in Japanese)
Merz S, Shozugawa K, Steinhauser G (2015) Analysis of Japanese radionuclide monitoring data of food before and after the fukushima nuclear accident. Environ Sci Technol 49(5):2875–2885. doi:10.1021/es5057648
Guillen J, Baeza A (2014) Radioactivity in mushrooms: a health hazard? Food Chem 154:14–25. doi:10.1016/j.foodchem.2013.12.083
Lin C, Skarpelos J (1997) Monitoring of fission product release in a boiling water reactor. J Radioanal Nucl Chem 220(2):173–181. doi:10.1007/BF02034852
Merz S, Steinhauser G, Hamada N (2013) Anthropogenic radionuclides in Japanese food: environmental and legal implications. Environ Sci Technol 47(3):1248–1256. doi:10.1021/es3037498
Acknowledgments
Dr. Akira Ishikawa is acknowledged for providing access to the ICP-MS. This work was supported by JSPS KAKENHI Grant Number 25870158.
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Shozugawa, K., Saito, T., Hori, M. et al. High-sensitivity determination of radioactive cesium in Japanese foodstuffs: 3 years after the Fukushima accident. J Radioanal Nucl Chem 307, 2117–2122 (2016). https://doi.org/10.1007/s10967-015-4407-8
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DOI: https://doi.org/10.1007/s10967-015-4407-8