Journal of Plant Research

, Volume 127, Issue 1, pp 51–56 | Cite as

Verification of radiocesium decontamination from farmlands by plants in Fukushima

  • Daisuke Kobayashi
  • Toshiyasu Okouchi
  • Mutsumi Yamagami
  • Takuro Shinano
JPR Symposium Current status and future control of cesium contamination in plants and algae in Fukushima

Abstract

The purpose of this study was to verify radiocesium decontamination from Fukushima farmland by plants and to screen plants useful for phytoremediation. Thirteen species from three families (Asteraceae, Fabaceae, and Poaceae) of crops were grown in shallow and deeply cultivated fields (0–8 and 0–15 cm plowing, respectively). To change plowing depth was expected to make different contacting zone between root system and radiocesium in soil. The radioactivity values of the plants due to the radiocesium 134Cs and 137Cs were 22–179 and 29–225 Bq kg dry weight−1, respectively. The 134Cs and 137Cs transfer factors for plants grown in the shallow field ranged from 0.021 to 0.12 and fro 0.019 to 0.13, respectively, with the geometric means of 0.051 and 0.057, respectively. The 134Cs and 137Cs transfer factors for plants grown in the deep field ranged from 0.019 to 0.13 and from 0.022 to 0.13, respectively, with the geometric means of 0.045 and 0.063, respectively. Although a reducing ratio was calculated to evaluate the decrease in radiocesium from contaminated soil during cultivation (i.e., phytoremediation ability), no plant species resulted in a remarkable decrease in radiocesium in soil among the tested crops. These results should be followed up for several years and further analyses are required to evaluate whether the phytoremediation technique is applicable to radioactively contaminated farmlands.

Keywords

Contamination Decontamination Phytoremediation Radiocesium Transfer factor 

Notes

Acknowledgments

This study was supported by the Mitsui & Co., Ltd. Environment Fund. We are grateful to Drs. Tetsuro Mimura, Mari Mimura, Chiyo Komiyama, and Akira Kitamura (Kobe University) for assisting in radioisotope measurements. The authors would like to thank Enago (http://www.enago.jp) for the English language review.

References

  1. Bunzl K, Kracke W (1989) Seasonal variation of soil-to-plant transfer of K and fallout 134,137Cs in peatland vegetation. Health Phys 57:593–600CrossRefPubMedGoogle Scholar
  2. Ehlken S, Kirchner G (2002) Environmental processes affecting plant root uptake of radioactive trace elements and variability of transfer factor data: a review. J Environ Radioact 58:97–112CrossRefGoogle Scholar
  3. González AJ (2012) The recommendations of the ICRP vis-á-vis the Fukushima Dai-ichi NPP accident aftermath. J Radiol Prot 32:N1–N7CrossRefPubMedGoogle Scholar
  4. Kobayashi T (2011) Radiation measurements at the campus of Fukushima Medical University through the 2011 earthquake off the Pacific coast of Tohoku and subsequent nuclear power plant crisis. Fukushima J Med Sci 57:70–74CrossRefPubMedGoogle Scholar
  5. Kobayashi D, Miyake M, Kakamu T, Tsuji M, Mori Y, Fukushima T, Hazama A (2013) Reducing radiation exposure using commonly available objects. Environ Health Prev Med 18:261–266CrossRefPubMedGoogle Scholar
  6. Massas I, Skarlou V, Haidouti C (2002) Plant uptake of 134Cs in relation to soil properties and time. J Environ Radioact 59:245–255CrossRefPubMedGoogle Scholar
  7. Matsumura H, Saito K, Ishioka J, Uwamino T (2011) Diffusion of radioactive materials from Fukushima Daiichi Nuclear Power Station obtained by Gamma-ray measurements on expressways. Transact Atom Energy Soc Jpn 10:152–162 (article in Japanese with English abstract)CrossRefGoogle Scholar
  8. Mimura T, Mimura M, Komiyama C, Miyamoto M, Kitamura A (2014) Measurements of gamma (γ)-emitting radionuclides with a high-purity germanium detector: the methods and reliability of our environmental assessments on the Fukushima 1 Nuclear Power Plant accident. J Plant Res (2014)Google Scholar
  9. Putyatin YV, Seraya TM, Petrykevich OM, Howard BJ (2006) Comparison of the accumulation of 137Cs and 90Sr by six spring wheat varieties. Radiat Environ Biophys 44:289–298CrossRefPubMedGoogle Scholar
  10. Soudek P, Tykva R, Vanek T (2002) Plant uptake of 134Cs in relation to soil properties and time. J Environ Radioact 59:245–255CrossRefGoogle Scholar
  11. Soudek P, Valenová S, Vavrîkovâ Z, Vanek T (2006) 137Cs and 90Sr uptake by sunflower cultivated under hydroponic conditions. J Environ Radioact 88:236–250CrossRefPubMedGoogle Scholar
  12. Ministry of Land, Infrastructure, Transport and Tourism (MLIT) Soil map of Fukushima PrefectureGoogle Scholar
  13. Yamaguchi N, Eguchi S, Fujiwara H, Hayashi K, Tsukada H (2012) Radiocesium and radioiodine in soil particles agitated by agricultural practices: field observation after the Fukushima nuclear accident. Sci Total Environ 425:128–134CrossRefPubMedGoogle Scholar
  14. Zhu YG, Smalders T (2000) Plant uptake of radiocesium; a review of mechanisms, regulation, and application. J Exp Bot 51:1635–1645CrossRefPubMedGoogle Scholar

Copyright information

© The Botanical Society of Japan and Springer Japan 2013

Authors and Affiliations

  • Daisuke Kobayashi
    • 1
  • Toshiyasu Okouchi
    • 1
  • Mutsumi Yamagami
    • 2
  • Takuro Shinano
    • 3
  1. 1.Department of Cellular and Integrative Physiology, School of MedicineFukushima Medical UniversityFukushimaJapan
  2. 2.Department of RadioecologyInstitute for Environmental ScienceKamikitaJapan
  3. 3.Agriculture Radiation Research CenterNARO Tohoku Agricultural Research CenterFukushimaJapan

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