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Kodama, Katsuaki; Ikeda, Kazutaka*; Isobe, Masahiko*; Takeda, Hikaru*; Ito, Masayuki*; Ueda, Yutaka*; Shamoto, Shinichi; Otomo, Toshiya*
Journal of the Physical Society of Japan, 85(9), p.094709_1 - 094709_5, 2016/09
Times Cited Count:1 Percentile:11.55(Physics, Multidisciplinary)Matsunaga, Takeshi; Nagao, Seiya*; Ueno, Takashi; Takeda, Seiji; Amano, Hikaru; Tkachenko, Y.*
Applied Geochemistry, 19(10), p.1581 - 1599, 2004/10
Times Cited Count:35 Percentile:55.3(Geochemistry & Geophysics)The association of dissolved Sr, Pu and Am with natural colloids was investigated in surface waters in the Chernobyl nuclear accident area by means of ultrafiltration. Results suggest that Pu and Am isotopes were preferentially associated with dissolved humic substances (HS) of high molecular size. A model calculation of the complexation of Pu and Am with HS also supported the above. This study has expanded our understanding of the general role of natural organic colloids in dictating the chemical form of actinides in the surface aquatic environment.
Matsunaga, Takeshi; Nagao, Seiya*; Takeda, Seiji; Ueno, Takashi; Amano, Hikaru
Dai-43-Kai Kankyo Hoshano Chosa Kenkyu Seika Rombun Shorokushu (Heisei-12-Nendo), p.49 - 50, 2002/03
no abstracts in English
Kodama, Katsuaki; Ikeda, Kazutaka*; Takeda, Hikaru*; Isobe, Masahiko*; Ito, Masayuki*; Ueda, Yutaka*; Shamoto, Shinichi; Otomo, Toshiya*
no journal, ,
no abstracts in English
Kodama, Katsuaki; Shamoto, Shinichi; Ikeda, Kazutaka*; Otomo, Toshiya*; Takeda, Hikaru*; Isobe, Masahiko*; Ito, Masayuki*; Ueda, Yutaka*
no journal, ,
no abstracts in English
Kodama, Katsuaki; Ikeda, Kazutaka*; Takeda, Hikaru*; Isobe, Masahiko*; Ito, Masayuki*; Ueda, Yutaka*; Shamoto, Shinichi; Otomo, Toshiya*
no journal, ,
no abstracts in English
Hosoda, Masahiro*; Saito, Kimiaki; Mikami, Satoshi; Sanada, Tetsuya*; Omori, Yasutaka*; Takeda, Hikaru*; Yamada, Takahiro*; Hirao, Shigekazu*; Tani, Kotaro*; Orita, Makiko*; et al.
no journal, ,
no abstracts in English
Uno, Koichiro*; Nakao, Atsushi*; Okumura, Masahiko; Kogure, Toshihiro*; Yamaguchi, Akiko; Takeda, Hikaru*; Maruyama, Hayato*; Shinano, Takuro*; Yanai, Junta*
no journal, ,
Biotite inhibits radiocesium (RCs) transfer from soil to plants by two functions of selective adsorption of radiocesium (Cs) between layers (Cs adsorption ability) and K supply from between layers (K supply ability). However, it was difficult to distinguish between the two. In this study, the authors succeeded in preparing biotite in which both functions are variously different by preparing weathered biotite in which interlayer pottasium (K) was replaced with rubidium (Rb) to lose K supply ability. By systematically comparing these biotites, the authors clarified the effects of Cs adsorption ability and K supply ability on Cs transfer to plants.