Evaluating radiocesium retention ablility of root-mat horizon using micro–PIXE analysis
Evaluating radiocesium retention ablility of root-mat horizon using micro–PIXE analysis
复制标题
使用微观评估根垫层的放射性铯保留能力
DOI：
10.1142/s012908351450003x
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
A. Terakawa.
中科院分区：
文献类型：
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作者：
. H. Arai;K. Ishii;S. Matsuyama;F. Fujishiro;A. Ishizaki;N. Osada;H. Ssugai;S. Koshio;K. Kusano;Y. Nozawa;S. Yamauchi;M. Karahashi;S. Oshikawa;K. Kikuchi;K. Watanabe;Y. Suzuki;Y. Kikuchi;A. Terakawa.
福岛第一核电站（FDNPP）事故后，大量放射性铯沉积在牧场和草地上。放射性铯在根垫层中的积累量高于地上植物体和矿质土壤。在这项研究中，造成较高的放射性铯浓度在根垫层的因素进行了评估，除了稳定的铯溶液和粒子诱导的X射线发射（PIXE）分析。结果表明，根表吸附Cs在根垫层中的积累起着重要作用。此外，Cs的吸收是其长期保存的关键。粘土矿物对Cs的吸附也有助于Cs的滞留。缓慢的水分入渗速率也可能影响放射性铯在根垫层中的富集。基于这些结果，可以得出结论，生物和非生物因素的有效保留放射性铯根席视野后FDNPP事故。
A lot of radiocesium had been deposited onto pastures and grasslands following Fukushima Daiichi Nuclear Power Plant (FDNPP) accident. More radiocesium was accumulated in root-mat horizon than in both above ground plant bodies and mineral soils. In this study, factors causing higher radiocesium concentrations in root-mat horizon were evaluated by the addition of stable cesium solution and particle-induced X-ray emission (PIXE) analysis. Results suggest that adsorption onto root surfaces played a significant role in Cs accumulation in root-mat horizon. Furthermore, absorption of Cs was key to its long-term preservation. The adsorption of Cs by clay minerals also contributed to its retention. A slow water infiltration rate may also affect the enrichment of radiocesium in root-mat horizon. Based on these results, it is concluded that both biotic and abiotic factors contributed to the effective retention of radiocesium in root-mat horizons following the FDNPP accident.