土壌からの放射性セシウムの 分離 - JRSM

1 2012 JRSM6 1.. 1.. 2. - - 3. Cs .. 4.. 5.. 2.. Cs .. 50 , 2 26 32,2011. 2012 JRSM6 3.. Cs .. ; ; . ; ; .. 3. 2. (1). 2012 JRSM6 4. Cs . 4 Cs .. Cs (illite), ( muscovite), ( biotite), . ( chlorite) . KCl Cs .. H. Iwata et. al., 6. nuclear Accidents in fukushima , Japan, and Expoloration of Effective Decontamination for the 137Cs- Contaminated Soils, pp123-142, Advances in nuclear fuel, 2012, Intech 2012 JRSM6 5.. 65% 1M (NH4Cl), 1M. (CH3 COOH) . 70% .. Naofumi Kozai, Toshihiko Ohnuki, Makoto Arisaka, Masayuki Watanabe, Fuminori Sakamoto, Shinya Yamasaki & Mingyu Jiang, Chemical states of fallout radioactive Cs in the soils deposited at fukushima daiichi nuclear power Plant accident, J. Nucl. Sci.

2 Tech., 49, 473 478, 2012. 2012 JRSM6 6.. (Sulfate aerosol) .. m, m 134Cs,137Cs .. m .. Naoki Kaneyasu, Hideo Ohashi, Fumie Suzuki, Tomoaki Okuda, and Fumikazu Ikemori, Sulfate Aerosol as a PotenRal Transport Medium of Radiocesium from the fukushima nuclear Accident, Environ. Sci. Technol., Article ASAP. 2012 JRSM6 7.. 1 . 190pm 298pm . 2012 JRSM6 8.. 2012 JRSM6 9. ( [3]). [3] . 8% . 100%.. 6~8 .. 10~20% .. 10. 2012 JRSM6 . 2. - - .. 134Cs+137Cs . KCl 15% . 3% . 3%, (CTAB) 6% .. KCl . 2012 JRSM6 11.. $% &'()* +,- /% $%&'()* +,- /%. 134 137 134 137. !"# Cs Cs !"# Cs Cs - M I 3 for 18 h 22 23. 40% KI for 42 h 19 20. I3- and 40% KI for 21 h 23 26. 40% KI for 152 h 19 23 40% KI for 152 h 17 14. Water for 10 h 7 7 Water for 10 h 5 6.

3 40% KI for 50 h 7 8 40% KI for 50 h 29 33. KI: . I3- . 70% .. 38% 2012 JRSM6 12. (C). (B). (A). F i g. 3 ( A ) B C . 137Cs 134Cs .. 2012 JRSM6 13.. X .. 2012 JRSM6 14. IP .. 2012 JRSM6 15. SEM . EDX . Cs eV Si-Al-C .. Cs .. 2012 JRSM6 16.. 2 : .. : .. 2012 JRSM6 17. 3. Cs . * . Cs .. Cs .. * .. 50 , 2 26 32,2011. 2012 JRSM6 18. * .. Cs .. Cs .. Cs .. 2012 JRSM6 19. 4.. 2012 JRSM6 20. 11 . /% . 75 4 5cm . 40 10a . 82 MgO . 3cm .. 30 10a 97 3cm . 10a 36 .. 10a . 55 30cm .. 15ha, .. 2012 JRSM6 21.. Radioisotopes, 61, 327 330, 2012. 50%.. 2012 JRSM6 22.. 1350.. 2012 JRSM6 23. : 1,300 .. 60,000Bq/kg . 2kg 50Bq/kg .. 2012 JRSM6 24. : .. 88% .. 99% . 5% . 2012 JRSM6 25. : . ( ) .. 36%, . 2012 JRSM6 26.

4 5.. 2012 JRSM6 27.. R. M., Adsorption of cesium of minerals: A review, J. Radioanal. Nucl. Chem., 171, 483-500, 1993. A. B. Hird, D. L. Rimmer, and F. R. Livens, Factors affecting the sorption and fixation of cesium in acid organic soil, European J. Soil Sci., 47, 97-104, 1996. 2012 JRSM6 28.