| 石墨炉原子吸收法中锡的原子化机理 |
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| 引用本文： | 周黎明,邵济才,朱明华.石墨炉原子吸收法中锡的原子化机理[J].华东理工大学学报(自然科学版),1991(3). |
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| 作者姓名： | 周黎明 邵济才 朱明华 |
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| 作者单位： | 华东化工学院分析测试中心，华东化工学院分析测试中心，华东化工学院分析测试中心 北京1048信箱第三教研室 |
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| 摘 要： | 使用石墨炉原子吸收技术,对锡在普通石墨管和热解涂锆石墨管中原子化过程进行了研究。利用分子吸收光谱技术证实了气相中SnO的存在,用X射线衍射测定了石墨管内表面的化合物状态,证实锡在普通石墨管中原子化的主要途径是气相SnO的热离解,而在热解涂锆管中则是SnO或SnO_2被ZrC还原为锡,然后锡蒸发原子化。
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| 关 键 词： | 锡 原子吸收 石墨炉 原子化机理 |
Atomization Mechanism of Tin in Graphite,Furnace Atomic Absorption Spectrometry |
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| Zhou Limin,Shao Jicai and Zhu Minhua.Atomization Mechanism of Tin in Graphite,Furnace Atomic Absorption Spectrometry[J].Journal of East China University of Science and Technology,1991(3). |
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| Authors: | Zhou Limin Shao Jicai and Zhu Minhua |
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| Institution: | Analysis and Research Centre |
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| Abstract: | The mechanism of tin atom formation lin a pyrolytic Zr-coated and ordinary graphite furnace atomizer is studied. The gas phase molecular absorption spectrum of SnO is measured. X-ray diffraction technique is used to determine the state of the compounds on the inner surface of the tube. It is suggested that, in ordinary tube, the tin atom is formed mainly through the thermal dissociation of SnO, while in the pyrolytic Zr-coated graphite tube, ZrC reduces SnO or SnO_2 to Sn, which is then atomized through vaporization. |
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| Keywords: | tin atomic absorption spectrometry graphite furnace atomization mechanism |
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