Abstract
Estimation of radionuclide concentrations in trees may be required to estimate their radiation exposure. However, concentration ratios of radionuclides from soil to tree species are limited for many radionuclide-tree combinations. To fill this gap, it is investigated in the present paper whether stable element concentration data for leafy vegetables are representative of those for wild tree leaves, and consequently, if these stable element data for leafy vegetables can be used as analogues to describe radionuclides transfer from soil to trees. Data for stable elements in leafy vegetables collected in Japan were compared with those in leaves of about 20 tree species worldwide. The correlation coefficients of element concentrations between leafy vegetables and tree leaves were higher than 0.90 with p < 0.001 by Student’s t test, and geometric means of concentration data for most elements were within the range of data for leafy vegetables. Thus, transfer parameters derived from stable element data for leafy vegetables could generally be used to estimate concentrations in tree leaves if data for the latter are not available. However, some trees accumulate a few elements (e.g., Al, Co, Mn and Si) in their leaves to higher concentrations than observed for leafy vegetables.
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This work has been partially supported by the Agency for Natural Resources and Energy, the Ministry of Economy, Trade and Industry (METI), Japan.
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This paper is based on a presentation made at the second meeting of the Wildlife Transfer Coefficient Handbook Working Group of the IAEA EMRAS II programme (held at the IAEA, Vienna, 22–24 July 2009).
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Tagami, K., Uchida, S. Can elemental composition data of crop leaves be used to estimate radionuclide transfer to tree leaves?. Radiat Environ Biophys 49, 583–590 (2010). https://doi.org/10.1007/s00411-010-0316-y
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DOI: https://doi.org/10.1007/s00411-010-0316-y