| 探针恒温原子化机理的研究 |
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| 引用本文： | 侯书恩 林守麟. 探针恒温原子化机理的研究[J]. 地球科学, 1992, 17(2): 218-222 |
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| 作者姓名： | 侯书恩 林守麟 |
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| 作者单位： | 中国地质大学测试中心(侯书恩)，中国地质大学应化系(林守麟)，中国地质大学测试中心(常诚) |
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| 摘 要： | ![]()
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| 关 键 词： | 石墨炉 探针 原子化 原子吸收光谱 |
STUDIES ON THE PROBE ISOTHERMAL ATOMIZATION MECHANISM |
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| Hou Shuen Lin Shoulin Chang Cheng. STUDIES ON THE PROBE ISOTHERMAL ATOMIZATION MECHANISM[J]. Earth Science-Journal of China University of Geosciences, 1992, 17(2): 218-222 |
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| Authors: | Hou Shuen Lin Shoulin Chang Cheng |
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| Abstract: | ![]()
The mechanism of atom formation of analyte is studied in graphite furnace atomic absorption spectrometry for probe isothermal atomization by means of a method that combines thermodynamics and kinatics. A home-made fully automatic probe system is employed for all the experiments. A new calculated formula of atom formation rate constant is proposed, in which the process of atom formation is considered as a zero order reaction. The atom formation activation energy of Cd, Pb, Sb, In, and Cu is calculated by using Arrhenius law, and the results are in agreement with the latent heat of vaporization of the metal for Cd, Pb, and Sb and the bond energy of the double atoms for In and Cu. |
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| Keywords: | probe atomization atom formation mechanism graphite furnace atomic absorp- tion spectrometry. |
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