| 电热石英管中AsH_3和SeH_2的原子化过程 |
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| 引用本文： | 郑衍生,王明慧,马强.电热石英管中AsH_3和SeH_2的原子化过程[J].吉林大学学报(理学版),1993(1). |
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| 作者姓名： | 郑衍生 王明慧 马强 |
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| 作者单位： | 吉林大学化学系，吉林大学化学系，吉林大学化学系 长春 130023，长春 130023，长春 130023 |
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| 摘 要： | 研究了H_2和O_2对AsH_3和SeH_2原子化的影响.实验表明,H_2对AsH_3原子化影响明显地大于SeH_2。只有H_2存在时O_2才对As吸收信号呈现增感作用,不论有无H_2,O_2均抑制Se吸收信号。因此,AsH_3原子化是H基碰撞所致,而SeH_2原子化是热分解为主。
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| 关 键 词： | AsH_3 SeH_2 原子化机理 原子吸收光谱 |
Atomization Process of AsH_3 and SeH_2 in a Electrothermal Quartz Tube |
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| Zheng Yansheng,Wang Minghui,Ma Qiang.Atomization Process of AsH_3 and SeH_2 in a Electrothermal Quartz Tube[J].Journal of Jilin University: Sci Ed,1993(1). |
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| Authors: | Zheng Yansheng Wang Minghui Ma Qiang |
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| Abstract: | The influences of H2 and O2 on the absorption signals of As and Se in a heated quartz tube were studied. The experimental results show that influence of H2 on the atomization of AsH3 is obviously larger than that of H2 on the atomization of SeH2. Only in the presence of H2 can air increase the absorption signal of AsH3. However, influence of air on the absorption signal of Se seems to be the suppressible effect whether H2 is present or absent. It is hence proposed that the atomization mechanism of AsH3 adsorbed on the wall of the quartz tube is caused by its collision with hydrogen free radicals, but that of SeH2 is mainly the result of the thermal decomposition. |
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| Keywords: | AsH3 SeH2 atomization mechanism atomic absorption spectrometry |
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