Micro-PIXE analysis of the distribution of cesium in clay particles for environmental remediation of Fukushima
Micro-PIXE analysis of the distribution of cesium in clay particles for environmental remediation of Fukushima
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DOI：
10.1142/s0129083514400063
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
K. Ishii;S. Itoh;D. Sata;S. Matsuyama;A. Terakawa;Seongyun Kim;H. Arai;N. Osada;T. Satoh;M. Koka;A. Kitamua;T. Kamiya
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文献类型：
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作者：
K. Ishii;S. Itoh;D. Sata;S. Matsuyama;A. Terakawa;Seongyun Kim;H. Arai;N. Osada;T. Satoh;M. Koka;A. Kitamua;T. Kamiya
福岛第一核电站事故造成了131 I、134 Cs和137 Cs的放射性污染。地面受污染的体积为3 × 107 m3。政府要求将受污染土壤的顶部5厘米移除并储存，以这种方式，希望减少其体积。从日本北方的一座山、一片稻田和一片菜地采集土壤样本，通过冲洗土壤的方法从泥水中提取淤泥。接下来，用碳酸铯（Cs2 CO 3）溶液喷洒淤泥。我们确定的量的Al，Si，K和Cs的粉砂颗粒使用微粒子诱导X射线发射（micro-PIXE）分析。菜地、稻田和山区的泥沙颗粒主要由吸附Cs原子的蒙脱石或蛭石组成。在多个探测角度的测量证实了铯原子均匀地被吸收在直径小于10−30 μm的泥沙颗粒中。这导致放射性铯原子被吸附在表面10 - 30 μm范围内的泥沙颗粒中。
The Fukushima Daiichi nuclear power plant accident caused radioactive pollution by 131I, 134Cs and 137Cs. The surface of the ground was contaminated at a volume of 3 × 107 m3. The government has mandated that the top 5 cm of the contaminated soil be removed and stored, in this way, it is desirable to reduce its volume. Soil samples were collected from a mountain, a rice field and a vegetable field in northern Japan, and the silt was extracted from the muddy water by washing the soil. Next, the silt was sprayed with a solution of cesium carbonate (Cs2CO3). We determined the amounts of Al, Si, K and Cs in the silt particles using micro-particle-induced X-ray emission (micro-PIXE) analysis. The silt particles from a vegetable field, a rice field and a mountain were mainly formed from smectite or vermiculite, which absorbs Cs atoms. The measurements at multiple detection angles confirmed that Cs atoms were uniformly absorbed within silt particles less than 10−30 μm in diameter. This resulted that the radioactive Cs atoms were adsorbed in silt particles within 10−30 μm of the surface.