@article{oai:repo.qst.go.jp:00046212, author = {Ishikawa, Nao and Tagami, Keiko and Uchida, Shigeo and 石川 奈緒 and 田上 恵子 and 内田 滋夫}, issue = {2}, journal = {Journal of Radioanalytical and Nuclear Chemistry}, month = {Jun}, note = {Abstract Plant uptake of radiocesium (137Cs) was investigated in consideration of the relationships with naturally existing 133Cs and potassium (K). We first determined plantunavailable 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.}, pages = {247--252}, title = {Relationships among 137Cs, 133Cs, and K in plant uptake observed in Japanese agricultural fields}, volume = {290}, year = {2011} }