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Uptake kinetics of deuteriated water vapor by plants: Experiments of D2O release in a greenhouse as a substitute for tritiated water |
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| Authors: | N. Momoshima H. Kakiuchi T. Okai S. Yokoyama H. Noguchi M. Atarashi H. Amano S. Hisamatsu M. Ichimasa Y. Ichimasa Y. Maeda |
| Affiliation: | (1) Department of Chemistry, Faculty of Science, Kyushu University, Hakozaki, 812-81 Higashiku, Fukuoka, Japan;(2) Department of Nuclear Engineering, Faculty of Engineering, Kyushu University, Hakozaki, 812-81 Higashiku, Fukuoka, Japan;(3) Department of Health Physics, Japan Atomic Energy Research Institute, Tokaimura, 319-11 Naka, Ibaraki, Japan;(4) Department of Environmental Safety Research, Japan Atomic Energy Research Institute, Tokaimura, 319-11 Naka, Ibaraki, Japan;(5) Department of Public Health, Akita University School of Medicine, 010 Hondo, Akita, Japan;(6) Faculty of Science, Ibaraki University, 310 Mito, Ibaraki, Japan;(7) Institute for Environmental Sciences, 1-7, Ienomae, Obuchi, 039-32 Rokkasho, Aomori, Japan |
| Abstract: | Potted plants were exposed to D2O vapor in a greenhouse and uptake of D2O by leaf and deposition of D2O to pot soil were examined. Atmospheric D2O concentration in the greenhouse increased rapidly after starting the release and reached constant level in a few hours. Although the variation of D2O concentration in leaf followed that in air with showing a time delay, D2O concentration in leaf did not become the same level as that in air and vein showed lower concentration that lamina. D2O concentration in the pot soil increased slowly with diffusing in deeper layer. |
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