Translocation of 133 Cs administered to Cryptomeria japonica wood

To reveal the in planta behaviour of caesium (Cs), the stable isotope Cs was administered into 3-year-old Cryptomeria japonica seedlings by the application of CsCl aqueous solution to the bark surface. The administered Cs was quantified by ICP-MS measurements, which showed transportation of Cs in an...

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Bibliographic Details
Published in:The Science of the total environment 2017-04, Vol.584-585, p.88
Main Authors: Aoki, Dan, Asai, Ryutaro, Tomioka, Rie, Matsushita, Yasuyuki, Asakura, Hiroyuki, Tabuchi, Masao, Fukushima, Kazuhiko
Format: Article
Language:English
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Summary:To reveal the in planta behaviour of caesium (Cs), the stable isotope Cs was administered into 3-year-old Cryptomeria japonica seedlings by the application of CsCl aqueous solution to the bark surface. The administered Cs was quantified by ICP-MS measurements, which showed transportation of Cs in an ascending direction in the stem. Distribution of Cs was visualized using freeze-fixed C. japonica woody stem samples and cryo-time-of-flight secondary ion mass spectrometry/scanning electron microscopy (cryo-TOF-SIMS/SEM) analysis. Cryo-TOF-SIMS/SEM visualization suggested that Cs was rapidly transported radially by ray parenchyma cells followed by axial transportation by pith and axial parenchyma cells. Adsorption experiments using powdered C. japonica wood samples and X-ray absorption fine structure (XAFS) analysis suggested that Cs was in the hydrated state following its deposition into tracheid cell walls.
ISSN:1879-1026