| 镧涂层表面效应初探 |
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| 引用本文： | 渠荣遴.镧涂层表面效应初探[J].分析测试学报,1995,14(5):73-76. |
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| 作者姓名： | 渠荣遴 |
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| 作者单位： | 天津大学分析中心 |
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| 摘 要： | 本实验通过对涂镧石墨管和非涂镧石墨管的电子显微分析，证实了镧涂层并未能对石墨管壁的孔洞起到有效的填充作用，这与测定金时吸收信号未明显变化的实验现象相吻合。通过对锡原子化前后石墨表面的Ｘ光电子谱分析，尝试提出了镧在管中的催化作用及影响某些元素原子化机理、从而改变其灵敏度的观点。
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| 关 键 词： | 镧涂层石墨管，表面效应，催化。 |
Surface Effect of Lanthanum Coating on Graphite Cuvette |
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| Qu Ronglin,He Fei.Surface Effect of Lanthanum Coating on Graphite Cuvette[J].Journal of Instrumental Analysis,1995,14(5):73-76. |
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| Authors: | Qu Ronglin He Fei |
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| Abstract: | In case that a graphite cuvette is coated with lanthanum,the atomization behavior of tin is remarkably different from that with an uncoated cuvette,The results of ESM,AAS and ESCA analyses support that La does not fill up the pores of the graphite cuvette.It combines with oxygen to form La_2O_3,catalyzes the oxidation of carbon,and thus changes the course of Sn atomization in the cuvette. |
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| Keywords: | La-coated graphite cuvette Surface effect Catalysis |
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