Distinction between Radiocesium (RCs)-bearing Microparticles and RCs-sorbing Minerals Derived from the Fukushima Nuclear Accident Using Acid Treatment
Distinction between Radiocesium (RCs)-bearing Microparticles and RCs-sorbing Minerals Derived from the Fukushima Nuclear Accident Using Acid Treatment
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DOI：
10.1246/cl.200374
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发表时间：
2020-11-01
影响因子：
1.6
通讯作者：
Kogure, Toshihiro
中科院分区：
文献类型：
--
作者：
Okumura, Taiga;Yamaguchi, Noriko;Kogure, Toshihiro
福岛核事故产生的放射性铯（RCs）物质包括RCs吸附矿物（CsSMs）和含RCs的硅酸盐玻璃微粒（CsMPs）。我们发现，虽然酸处理对CsMPs的影响不大，但由于溶解，它显着降低了CsSMs的放射性。利用这一差异，我们提出了一种新的方法来估计的贡献CsMP和CsSM的总放射性污染的材料，使用放射自显影或γ射线光谱。CsMP在样品中的分布也可以被阐明，而无需耗时的显微镜分析。
Radiocesium (RCs)-carrying materials derived from the Fukushima nuclear accident consist of RCs-sorbing minerals (CsSMs) and RCs-bearing silicate-glass microparticles (CsMPs). We reveal that while acid treatment has little effect on CsMPs, it significantly decreases the radioactivity of CsSMs due to dissolution. Using this difference, we propose a novel approach to estimating the contributions of CsMPs and CsSMs to total radioactivity of contaminated materials using autoradiography or gamma-ray spectroscopy. Distribution of CsMPs in samples can also be elucidated without time-consuming microscopic analysis.