Chemical forms of radioactive Cs in soils originated from Fukushima Dai-ichi nuclear power plant accident studied by extraction experiments

We performed three-step sequential extraction experiments, with Milli-Q water, 1 M ammonium acetate solution and 0.11 M acetic acid as extractants of Cs, on soils radiologically contaminated by Fukushima Dai-ichi Nuclear Power Plant accident. Though aqueous solutions containing ammonium salts are ef...

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Bibliographic Details
Published in:Journal of radioanalytical and nuclear chemistry 2015-02, Vol.303 (2), p.1357-1359
Main Authors: Hirose, Masaaki, Kikawada, Yoshikazu, Tsukamoto, Atsushi, Oi, Takao, Honda, Teruyuki, Hirose, Katsumi, Takahashi, Hiroaki
Format: Article
Language:English
Subjects:
Accidental contamination
Accidents
Ammonium compounds
Ammonium paratungstate
Chemistry
Chemistry and Materials Science
Clay minerals
Diagnostic Radiology
Extraction
Hadrons
Heavy Ions
Inorganic Chemistry
Nuclear accidents
Nuclear Chemistry
Nuclear energy
Nuclear Physics
Nuclear power generation
Nuclear power plants
Organic acids
Physical Chemistry
Soil pollution
Soils
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Summary:We performed three-step sequential extraction experiments, with Milli-Q water, 1 M ammonium acetate solution and 0.11 M acetic acid as extractants of Cs, on soils radiologically contaminated by Fukushima Dai-ichi Nuclear Power Plant accident. Though aqueous solutions containing ammonium salts are effective to extract Cs from soils, the obtained overall extracted fractions of radioactive Cs by the three-step sequential extraction process were less than 30 %. Thus, the most of the radioactive Cs deposited on soils is probably incorporated in the non- or hardly exchangeable site of clay minerals, components of the soils.
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-014-3592-1