| 电热蒸发进样—等离子体原子发射光谱中钒和钛的蒸发机理研究 |
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| 引用本文： | 胡斌,江祖成.电热蒸发进样—等离子体原子发射光谱中钒和钛的蒸发机理研究[J].高等学校化学学报,1993,14(12):1665-1667. |
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| 作者姓名： | 胡斌 江祖成 |
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| 作者单位： | 武汉大学化学系，武汉大学化学系，武汉大学化学系 武汉 430072，武汉 430072，武汉 430072 |
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| 摘 要： | 自1974年Nixon报道钽丝电热蒸发作为ICP-AES进样技术以来,这一技术已引起了人们的极大兴趣,受到越来越广泛的重视。电热蒸发(ETV)-ICP-AES是一种将蒸发和激发分步进行的联用技术。石墨是目前普遍使用的蒸发器材料。然而,在高温下某些元素和石墨材料可以发生碳化反应,形成热稳定的碳化物,使分析物蒸发不完全或根本不蒸发,从而影响分析结果的灵敏度和准确性。为了解决这一问题,我们曾提出了以聚四氟乙烯(PTFE)悬浮体为氟化剂,氟化辅助ETV-ICP-AES直接测定粉煤标样中钒和钛的新方法,其检出限
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| 关 键 词： | 电热蒸发 钒 钛 ICP－AES |
The Study on Vaporization Mechanisms of Vanadium and Titanium in ICP-AES with Sample Introduction by Graphite Furnace Electrothermal Vaporization |
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| HU Bin,JIANG Zu-Cheng,ZENG Yun-E.The Study on Vaporization Mechanisms of Vanadium and Titanium in ICP-AES with Sample Introduction by Graphite Furnace Electrothermal Vaporization[J].Chemical Research In Chinese Universities,1993,14(12):1665-1667. |
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| Authors: | HU Bin JIANG Zu-Cheng ZENG Yun-E |
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| Abstract: | In this paper, the vaporization processes of vanadium and titanium in GF-ETV-ICP-AES have been investigated in detail. By observing and comparing the vaporization behavior of vanadium and titanium in the presence/absence of fluorinating agent, PTFE, together with the results of residues chemical composition analysis after graphite furnace heating cycle, the vaporization mechanisms of vanadium and titanium in graphite furnace have been proposed, and it is verified by the results of thermodynamic calculation. |
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| Keywords: | Graphite furnace electrothermal vaporization Vaporization mechanism Vanadium Titanium Polytetrafluoroethylene(PTFE) |
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