气候变化领域集成服务门户(CCPortal): Changes in radioactive cesium concentrations from 2011 to 2017 in Fukushima coastal sediments and relative contributions of radioactive cesium-bearing microparticles

CCPortal

DOI	10.1016/j.marpolbul.2020.111769
	Changes in radioactive cesium concentrations from 2011 to 2017 in Fukushima coastal sediments and relative contributions of radioactive cesium-bearing microparticles
	Kubo A.; Tanabe K.; Ito Y.; Ishimaru T.; Otsuki M.; Arakawa H.; Watanabe Y.W.; Miura H.; Tsumune D.; Kanda J.
发表日期	2020
ISSN	0025326X
卷号	161
英文摘要	Sedimentary cesium-137 concentrations around the Fukushima Daiichi Nuclear Power Plant (FDNPP) were measured from 2011 to 2017 at eight stations. Although high values were observed until 2013, decreasing trends were observed at the surface sediments of seven stations. We isolated 25 radioactive Cs-bearing microparticles (CsMPs; 1.0–5385 Bq per particle). The contribution ratio of CsMPs to each sample ranged from 4.1% to 99.5% (median 58.8%), with the contribution ratio of the CsMPs in the southern part of the FDNPP was low compared to that from the northern part. In the southern part of the FDNPP, small CsMPs that could not be isolated in this study were present in large quantities immediately after the accident, and gradually diffused away and/or were dissolved over time. In contrast, the CsMPs in the northern part of the FDNPP have most likely accumulated over time, as suggested by the silty nature of the sediments there. © 2020 Elsevier Ltd
英文关键词	Cesium-134; Cesium-137; CsMP; FDNPP; Radiocesium
语种	英语
scopus关键词	Cesium; Nuclear fuels; Radioactivity; Sediments; Coastal sediments; Contribution ratios; Fukushima dai-ichi nuclear power plants; Micro-particles; Most likely; Radioactive cesiums; Relative contribution; Surface sediments; Nuclear power plants; cesium; cesium 134; cesium 137; accumulation; cesium isotope; coastal sediment; concentration (composition); nuclear power plant; radioactive pollution; sediment pollution; trend analysis; Article; concentration (parameter); controlled study; diffusion; dissolution; elemental analysis; environmental radioactivity; Fukushima nuclear accident; isolation procedure; particle size; seashore; sediment; Fukushima [Tohoku]; Honshu; Japan; Tohoku
来源期刊	Marine Pollution Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/148447
作者单位	Department of Geosciences, Shizuoka University, Shizuoka, Japan; Department of Ocean Sciences, Tokyo University of Marine Science and Technology, Tokyo, Japan; Faculty of Environmental Earth Science, Hokkaido University, Sapporo, Japan; Environmental Science Research Laboratory, Central Research Institute of Electric Power Industry, Chiba, Japan
推荐引用方式 GB/T 7714	Kubo A.,Tanabe K.,Ito Y.,et al. Changes in radioactive cesium concentrations from 2011 to 2017 in Fukushima coastal sediments and relative contributions of radioactive cesium-bearing microparticles[J],2020,161.
APA	Kubo A..,Tanabe K..,Ito Y..,Ishimaru T..,Otsuki M..,...&Kanda J..(2020).Changes in radioactive cesium concentrations from 2011 to 2017 in Fukushima coastal sediments and relative contributions of radioactive cesium-bearing microparticles.Marine Pollution Bulletin,161.
MLA	Kubo A.,et al."Changes in radioactive cesium concentrations from 2011 to 2017 in Fukushima coastal sediments and relative contributions of radioactive cesium-bearing microparticles".Marine Pollution Bulletin 161(2020).