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Novel Method of Quantifying Radioactive Cesium-Rich Microparticles (CsMPs) in the Environment from the Fukushima Daiichi Nuclear Power Plant
http://hdl.handle.net/2241/00152971
http://hdl.handle.net/2241/00152971e2c9dc18-9ec5-459a-bc25-b93332c6696c
名前 / ファイル | ライセンス | アクション |
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EST_52-11 (4.7 MB)
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Item type | Journal Article(1) | |||||
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公開日 | 2018-07-25 | |||||
タイトル | ||||||
タイトル | Novel Method of Quantifying Radioactive Cesium-Rich Microparticles (CsMPs) in the Environment from the Fukushima Daiichi Nuclear Power Plant | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
著者 |
Ikehara, Ryohei
× Ikehara, Ryohei× Suetake, Mizuki× Komiya, Tatsuki× Furuki, Genki× Ochiai, Asumi× Yamasaki, Shinya× Bower, William R.× Law, Gareth T. W.× Ohnuki, Toshihiko× Grambow, Bernd× Ewing, Rodney C.× Utsunomiya, Satoshi |
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著者別名 |
山﨑, 信哉
× 山﨑, 信哉 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Highly radioactive cesium-rich microparticles (CsMPs) were released from the Fukushima Daiichi nuclear power plant (FDNPP) to the surrounding environment at an early stage of the nuclear disaster in March of 2011; however, the quantity of released CsMPs remains undetermined. Here, we report a novel method to quantify the number of CsMPs in surface soils at or around Fukushima and the fraction of radioactivity they contribute, which we call “quantification of CsMPs” (QCP) and is based on autoradiography. Here, photostimulated luminescence (PSL) is linearly correlated to the radioactivity of various microparticles, with a regression coefficient of 0.0523 becquerel/PSL/h (Bq/PSL/h). In soil collected from Nagadoro, Fukushima, Japan, CsMPs were detected in soil sieved with a 114 μm mesh. There was no overlap between the radioactivities of CsMPs and clay particles adsorbing Cs. Based on the distribution of radioactivity of CsMPs, the threshold radioactivity of CsMPs in the size fraction of <114 μm was determined to be 0.06 Bq. Based on this method, the number and radioactivity fraction of CsMPs in four surface soils collected from the vicinity of the FDNPP were determined to be 48–318 particles per gram and 8.53–31.8%, respectively. The QCP method is applicable to soils with a total radioactivity as high as ∼106 Bq/kg. This novel method is critically important and can be used to quantitatively understand the distribution and migration of the highly radioactive CsMPs in near-surface environments surrounding Fukushima. | |||||
書誌情報 |
Environmental science & technology 巻 52, 号 11, p. 6390-6398, 発行日 2018-06 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0013-936X | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00637524 | |||||
PubMed番号 | ||||||
識別子タイプ | PMID | |||||
関連識別子 | 29782160 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1021/acs.est.7b06693 | |||||
権利 | ||||||
権利情報 | © 2018 American Chemical Society | |||||
権利 | ||||||
権利情報 | This is an open access article published under a Creative Commons Attribution (CC-BY) License, which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited. | |||||
著者版フラグ | ||||||
値 | publisher | |||||
出版者 | ||||||
出版者 | American Chemical Society |