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Mukai H, Hirose A, Motai S, et al. Cesium adsorption/desorption behavior of clay minerals considering actual contamination conditions in Fukushima. Sci Rep. 2016;6:21543doi: 10.1038/srep21543.
Mukai, H., Hirose, A., Motai, S., Kikuchi, R., Tanoi, K., Nakanishi, T. M., Yaita, T., & Kogure, T. (2016). Cesium adsorption/desorption behavior of clay minerals considering actual contamination conditions in Fukushima. Scientific reports, 621543. https://doi.org/10.1038/srep21543
Mukai, Hiroki, et al. "Cesium adsorption/desorption behavior of clay minerals considering actual contamination conditions in Fukushima." Scientific reports vol. 6 (2016): 21543. doi: https://doi.org/10.1038/srep21543
Mukai H, Hirose A, Motai S, Kikuchi R, Tanoi K, Nakanishi TM, Yaita T, Kogure T. Cesium adsorption/desorption behavior of clay minerals considering actual contamination conditions in Fukushima. Sci Rep. 2016 Feb 12;6:21543. doi: 10.1038/srep21543. PMID: 26868138; PMCID: PMC4751473.
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Sci Rep. 2016 Feb 12;6:21543. doi: 10.1038/srep21543.

Cesium adsorption/desorption behavior of clay minerals considering actual contamination conditions in Fukushima.

Scientific reports

Hiroki Mukai, Atsushi Hirose, Satoko Motai, Ryosuke Kikuchi, Keitaro Tanoi, Tomoko M Nakanishi, Tsuyoshi Yaita, Toshihiro Kogure

Affiliations

  1. Graduate School of Sciences, The University of Tokyo, Bunkyo, Tokyo 113-0033, Japan.
  2. Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo, Tokyo 113-8657, Japan.
  3. Quantum Beam Science Center and Fukushima Environmental Safety Center, Japan Atomic Energy Agency, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan.

PMID: 26868138 PMCID: PMC4751473 DOI: 10.1038/srep21543

Abstract

Cesium adsorption/desorption experiments for various clay minerals, considering actual contamination conditions in Fukushima, were conducted using the (137)Cs radioisotope and an autoradiography using imaging plates (IPs). A 50 μl solution containing 0.185 ~ 1.85 Bq of (137)Cs (10(-11) ~ 10(-9 )molL(-1) of (137)Cs) was dropped onto a substrate where various mineral particles were arranged. It was found that partially-vermiculitized biotite, which is termed "weathered biotite" (WB) in this study, from Fukushima sorbed (137)Cs far more than the other clay minerals (fresh biotite, illite, smectite, kaolinite, halloysite, allophane, imogolite) on the same substrate. When WB was absent on the substrate, the amount of (137)Cs sorbed to the other clay minerals was considerably increased, implying that selective sorption to WB caused depletion of radiocesium in the solution and less sorption to the coexisting minerals. Cs-sorption to WB continued for about one day, whereas that to ferruginous smectite was completed within one hour. The sorbed (137)Cs in WB was hardly leached with hydrochloric acid at pH 1, particularly in samples with a longer sorption time. The presence/absence of WB sorbing radiocesium is a key factor affecting the dynamics and fate of radiocesium in Fukushima.

References

  1. Environ Sci Technol. 2014 Nov 18;48(22):13053-9 - PubMed
  2. Science. 1988 Mar 11;239(4845):1286-8 - PubMed
  3. J Phys Chem A. 2015 Jun 4;119(22):5691-700 - PubMed

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