Relationships among 137Cs, 133Cs,and K in plant uptake observed in Japanese agricultural fields |
| |
| Authors: | Nao Kamei-Ishikawa Keiko Tagami Shigeo Uchida |
| |
| Affiliation: | (1) Department of Civil and Environmental Engineering, Iwate University, Ueda 4-3-5, Morioka, Iwate 020-8551, Japan;(2) Office of Biospheric Assessment for Waste Disposal, National Institute of Radiological Sciences, Anagawa 4-9-1, Inage, Chiba 263-8555, Japan |
| |
| Abstract: | Plant uptake of radiocesium (137Cs) was investigated in consideration of the relationships with naturally existing 133Cs and potassium (K). We first determined plant-unavailable fraction of 137Cs in soil by batch sorption and sequential extraction methods with a radiotracer. Then, using the data obtained from the batch sorption and extraction methods, we clarified the relationships of plant-available and plant-unavailable fractions between 137Cs, 133Cs, and K in soil. Additionally, 137Cs concentrations in crop were estimated using 137Cs in soil and several factors, i.e. fixation ratio of 137Cs in soil, cation exchange capacity, and K concentration in crop. The results implied that the fixation ratio of 137Cs in soil was a very important key to understanding 137Cs plant uptake. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
