Application of photoluminescence microspectroscopy: a study on transfer of uranyl and europium ions on dry silica gel plate

Application of photoluminescence microspectroscopy: a study on transfer of uranyl and europium ions on dry silica gel plate
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光致发光显微光谱技术的应用:铀酰和铕离子在干硅胶板上的转移研究

DOI:
10.1080/00223131.2020.1755734
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发表时间:
2020
影响因子:
1.2
通讯作者:
Watanabe Masayuki
Watanabe Masayuki
中科院分区:
工程技术4区
文献类型:
--
作者:
Kusaka Ryoji;Watanabe Masayuki

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当水与多孔材料接触时,水和溶解在水中的化学物质转移到多孔材料的内部。为了研究铀酰和铕离子在干燥硅胶板上的转移,我们在干燥硅胶板上滴入少量溶解铀酰和铕离子的水溶液(~0.5 μL),用光致发光显微光谱法观察扩散在硅胶板上的铀酰和铕离子的分布。铀酰和铕离子的光致发光图像清楚地表明,当铀酰离子共存于溶液中时,铕离子比铀酰离子转移的面积更大。可以解释为,铕离子的大面积分布是由于铀酰离子优先吸附到硅胶上,铀酰的吸附干扰了铕离子的吸附。铀酰离子的共存会影响其他离子的迁移率。
When water contacts with porous materials, water and chemical species dissolved in the water transfer into the inside of the porous materials. Here, to study the transfer of uranyl and europium ions on a dry silica gel plate, we dropped a small amount of aqueous solution (~0.5 μL) dissolving the two ions on a dry silica gel plate, and the distributions of the two ions spread on the silica gel plate were observed by photoluminescence microspectroscopy. Photoluminescence images of uranyl and europium ions clearly show that when uranyl ion coexists in the solution, europium ion transfers in a larger area compared to uranyl ion. It can be interpreted that the larger-area distribution of europium ion is caused because uranyl ion is preferentially adsorbed to silica gel and the uranyl adsorption disturbs the adsorption of europium ion. The coexistence of uranyl ion may influence the mobility of other ion species.
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