A method for visualizing cesium ions adsorbed on wood charcoal using SEM and EDX
A method for visualizing cesium ions adsorbed on wood charcoal using SEM and EDX
复制标题
使用 SEM 和 EDX 可视化木炭上吸附的铯离子的方法
DOI：
10.1007/s00226-016-0875-4
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
Yamauchi S
中科院分区：
文献类型：
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作者：
Yamagishi T; Kurimoto Y; Yamauchi S
基于扫描电子显微镜和能量色散X射线能谱（SEM-EDX），提出了一种新的方法，用于研究日本雪松炭吸附铯离子（Cs+）的分布。将木炭和普通木材样品浸泡在饱和CsCl水溶液中后，用树脂包埋，并制备薄切片用于Cs+观测。活性炭上的Cs+离子可以在EDX图谱图像中看到，也可以在具有足够对比度的线轮廓中看到，以识别各种细胞壁区域之间的差异。另一方面，Cs+不能观察到的EDX映射图像的木材样品，尽管已经浸泡在饱和的氯化铯水溶液。这些结果表明，Cs+吸附在木炭上可以使用该方法，但不是木材中的Cs+可视化。此外，通过EDX在活性炭上检测到的氧可以被认为是表面官能团存在的指示剂。
A new method based on scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM–EDX) was developed for visualizing the distribution of cesium ions (Cs+) adsorbed by Japanese cedar charcoal. After being soaked in saturated aqueous CsCl solutions, wood charcoal and regular wood samples were embedded in resin, and thin sections of sample were prepared for the Cs+observations. The Cs+ions on charcoal could be seen in EDX mapping images and also in line profiles with enough contrast to identify differences between the various carbonized cell wall regions. On the other hand, Cs+could not be observed in the EDX mapping images of wood samples, despite having been soaked in a saturated aqueous CsCl solution. These results indicate that Cs+adsorbed on charcoal can be visualized using this method, but not Cs+in wood. Additionally, oxygen detected on the charcoal by EDX can be regarded as an indicator of the presence of surface functional groups.