@misc{oai:repo.qst.go.jp:00069294,
 author = {Ogiyama, Shinichi and Takeda, Hiroshi and Uchida, Shigeo and 荻山 慎一 and 武田 洋 and 内田 滋夫},
 month = {Feb},
 note = {Geological disposal of radioactive waste from nuclear facilities is planned to avoid radiation exposure to the public people. For maintaining public health safety and assessing radiation exposure, it is necessary to clarify pathways on how these radioactive elements are transferred through the biosphere to reach via consumption of edible plants. Past studies have reported that soybean and rice plants grown in a nutrient solution containing various radioactive nuclides, such as metal elements, accumulated them in the plant parts. Also, radiotracer experiments on vegetable plants and root crops have reported. However, little is known about carbon transfer to plants based on geological disposal of radioactive waste. Carbon-14 from radioactive waste is one of the most important radioactive nuclides for environmental assessment in the context of geological disposal. There are both organic and inorganic carbon forms in radioactive waste, and it has been reported that most organic carbon in radioactive waste is present as carboxylic acids such as acetic acid. It has been generally thought that a major carbon source for plants comes from air as carbon dioxide (CO2) and then it is assimilated by photosynthesis. However, it is also necessary for assessment of geological disposal to clarify transfer of carbon from underground and absorption of carbon by plant roots. Thus, the present study was conducted to examine plant uptake and assimilation of carbon through plant roots by using C-14 nuclide in the form of acetic acid. The root-uptake of organic carbon as acetic acid by various plants and dynamics of carbon surrounding the experimental tessera (spatially heterogeneous environment) were examined using C-14 nuclide., Waste Management 2008},
 title = {Root-Uptake of C-14 Acetic Acid by Various Plants and C-14 Dynamics Surrounding the Experimental Tessera},
 year = {2008}
}