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The extractability of potassium and radiocaesium in soils developed from granite and sedimentary rock in Fukushima, Japan


Potassium (K) and radiocaesium (RCs) were chemically extracted from soils derived from granite (G soils) and sedimentary rock (S soils) in Fukushima, Japan. The extractants employed were 1 M HNO3, concentrated HNO3, and HF + HClO4. As S soils contain a lower amount of trioctahedral 2:1 phyllosilicates than G soils, the RCs/K ratio was higher in S soils than in G soils with 1 M HNO3 extraction, indicating that the potential risk of soil-to-plant transfer of RCs is higher in S soils than in G soils. In conclusion, information about surface geology is important in predicting the spatial pattern of soil characteristics related to transferability of RCs.

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  1. 1.

    Smolders E, Van Den Brande K, Merckx R (1997) Concentrations of 137Cs and K in soil solution plant availability of 137Cs in soils. Environ Sci Technol 31(12):3432–3438

    CAS  Article  Google Scholar 

  2. 2.

    White PJ, Broadley MR (2000) Mechanisms of caesium uptake by plants. New Phytol 147(2):241–256

    CAS  Article  Google Scholar 

  3. 3.

    MAFF (2014) Causes of contamination by radiocesium and countermeasures for these problems. (in Japanese

  4. 4.

    Kato N, Kihou N, Fujimura S, Ikeba M, Miyazaki N, Saito Y, Eguchi T, Itoh S (2015) Potassium fertilizer and other materials as countermeasures to reduce radiocesium levels in rice: results of urgent experiments in 2011 responding to the Fukushima Daiichi Nuclear Power Plant accident. Soil Sci Plant Nutr 61:179–190

    CAS  Article  Google Scholar 

  5. 5.

    Kubo K, Fujimura S, Kobayashi H, Ota T, Shinano T (2017) Effect of soil exchangeable potassium content on cesium absorption and partitioning in buckwheat grown in a radioactive cesium-contaminated field. Plant Prod Sci 20:396–405

    CAS  Article  Google Scholar 

  6. 6.

    Eguchi T, Ohta T, Ishikawa T, Matsunami H, Takahashi Y, Kubo K, Yamaguchi N, Kihou N, Shinano T (2015) Influence of the nonexchangeable potassium of mica on radiocesium uptake by paddy rice. J Environ Radioact 147:33–42

    CAS  Article  Google Scholar 

  7. 7.

    Ogasawara S, Eguchi T, Nakao A, Fujimura S, Takahashi Y, Matsunami H, Tsukada H, Yanai J, Shinano T (2019) Phytoavailability of 137Cs and stable Cs in soils from different parent materials in Fukushima, Japan. J Environ Radioact 198:117–125

    CAS  Article  Google Scholar 

  8. 8.

    Fanning D, Keramidas V, El-Deskoy M (1989) Micas. In: Dixon JB, Weed SB (eds) Minerals in soil environments. Soil Sci Soc Am, Madison, pp 551–634

    Google Scholar 

  9. 9.

    AIST (ed.), Geological Survey of Japan (2014) Seamless digital geological map of Japan 1:200,000. Jan 14, 2014 version, Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology

  10. 10.

    Mukai H, Hatta T, Kitazawa H, Yamada H, Yaita T, Kogure T (2014) Speciation of radioactive soil particles in the Fukushima contaminated area by IP autoradiography and microanalyses. Environ Sci Technol 48(22):13053–13059

    CAS  Article  Google Scholar 

  11. 11.

    Ramseyer K, Boles JR (1986) Mixed-layer illite/smectite minerals in tertiary sandstones and shales, San Joaquin Basin, California. Clays Clay Miner 34(2):115–124

    CAS  Article  Google Scholar 

  12. 12.

    Fukushima Prefectural Government (2018). Accessed 20 Aug 2019

  13. 13.

    Ross GJ, Rich CI (1974) Effect of oxidation and reduction on potassium exchange of biotite. Clays Clay Miner 22(4):355–360

    CAS  Article  Google Scholar 

  14. 14.

    Helmke PA, Sparks DL (1996) Lithium, sodium, potassium, rubidium, and cesium. In: Sparks DL (ed) Methods of soil analysis part 3—chemical methods. SSSA Book Series no. 5, Soil Science Society of America, Inc. and American Society of Agronomy, Inc. Madison, WI, pp 560–563

    Google Scholar 

  15. 15.

    Saito T, Makino H, Tanaka S (2014) Geochemical and grain-size distribution of radioactive and stable cesium in Fukushima soils: implications for their long-term behavior. J Environ Radioact 138:11–18

    CAS  Article  Google Scholar 

  16. 16.

    Aoyama M, Hirose K (2008) Radiometric determination of anthropogenic radionuclides in seawater. Radioact Environ 11:137–162

    CAS  Article  Google Scholar 

  17. 17.

    Budavari S, O’Neil MJ, Smith A, Heckelman PE, Kinneary JF (eds) (1996) The Merck Index, an encyclopedia of chemicals, drugs, and biologicals, 12th edn. Merck & Co Inc., Kenilworth

    Google Scholar 

  18. 18.

    Hirose K (2012) 2011 Fukushima Dai-ichi nuclear power plant accident: summary of regional radioactive deposition monitoring results. J Environ Radioact 111:13–17

    CAS  Article  Google Scholar 

  19. 19.

    Moore DM, Reynolds RC Jr (1997) Identification of clay minerals and associated minerals. In: Moore DM, Reynolds RC Jr (eds) X-ray diffraction and the identification and analysis of clay minerals (Second Edition). Oxford University Press, Madison, NY, pp 227–260

    Google Scholar 

  20. 20.

    Sawhney BL (1972) Selective sorption and fixation of cations by clay minerals: a review. Clays Clay Miner 20:93–100

    CAS  Article  Google Scholar 

  21. 21.

    Delvaux B, Kruyts N, Cremers A (2000) Rhizospheric mobilization of radiocesium in soils. Environ Sci Technol 34(8):1489–1493

    CAS  Article  Google Scholar 

  22. 22.

    Vandebroek L, Hees MV, Delvaux B, Spaargaren O, Thiry Y (2012) Relevance of radiocaesium interception potential (RIP) on a worldwide scale to assess soil vulnerability to 137Cs contamination. J Environ Radioact 104:87–93

    CAS  Article  Google Scholar 

  23. 23.

    Kondo M, Maeda H, Goto A, Nakano H, Kiho N, Makino T, Sato M, Fujimura S, Eguchi T, Hachinohe M, Hamamatsu S, Ihara H, Takai T, Arai-Sanoh Y, Kimura T (2015) Exchangeable Cs/K ratio in soil is an index to estimate accumulation of radioactive and stable Cs in rice plant. Soil Sci Plant Nutr 61:133–143

    CAS  Article  Google Scholar 

  24. 24.

    Yamamura K, Fujimura S, Ota T, Ishikawa T, Saito T, Arai Y, Shinano T (2018) A statistical model for estimating the radiocesium transfer factor from soil to brown rice using the soil exchangeable potassium content. J Environ Radioact 195:114–125

    CAS  Article  Google Scholar 

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Gratitude is expressed to the Food Safety and Consumer Affairs Bureau, MAFF, prof. Shin Moono (Faculty of Food and Agricultural Sciences, Fukushima University), Dr. Yuzo Manpuku (Institute for Agro-Environmental Sciences, NARO), Dr. Tomoaki Nemoto (Fukushima Prefectural Government), Dr. Takashi Saito (same as above), Mr. Kazuhiro Kohata (same as above), and the agricultural department of Minamisoma city and Namie town who helped soil samples collection. Authors also appreciate Ms. Yuko Abe (Tohoku Agricultural Research Centre, NARO) for the help of experiments. The authors would like to thank Enago ( for the English language review. Analyses of RCs measurements were carried out in the Laboratory of Radioisotopes of Kyoto Prefectural University.


This work was financially supported by the JSPS KAKENHI (Grant Numbers JP15J06569 and 16H06188).

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Correspondence to Sho Ogasawara.

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Ogasawara, S., Nakao, A., Eguchi, T. et al. The extractability of potassium and radiocaesium in soils developed from granite and sedimentary rock in Fukushima, Japan. J Radioanal Nucl Chem 323, 633–640 (2020).

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  • Agricultural soils
  • Fukushima prefecture
  • Micaceous mineral
  • Potassium
  • Radiocaesium