Dissociation of analyte oxide ions in inductively coupled plasma mass spectrometry
Dissociation of analyte oxide ions in inductively coupled plasma mass spectrometry
复制标题
电感耦合等离子体质谱分析中分析物氧化物离子的解离
DOI：
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发表时间：
1994
期刊：
影响因子：
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通讯作者：
D. Deruaz
中科院分区：
文献类型：
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作者：
E. Poussel;J. Mermet;D. Deruaz
为了支持等离子体中分析物氧化物形成的假设，在电感耦合等离子体质谱中研究了分析物氧化物离子与采样位置、载气流速和从等离子体到样品的能量转移效率的函数。由于其氧化物键强度高，选择镧作为测试物质，并将其行为与铅的行为进行比较，因为该元素的氧化物键强度低。使用原型 ICP 质谱仪。在所使用的操作条件下，LaO+: La+ 比率在 0.2–13 000% 范围内。能量传递要么通过添加保护气体而降低，要么通过添加氢气来改善。 LaO+: La+ 比率被最小化，以实现低载气流速和有效的能量转移。温度光学测量证实了这一点。结果与最近其他工作中发现的结果非常一致。在任何情况下，我们发现采样位置的作用对于研究分析物氧化物离子行为和优化分析性能至关重要。
Analyte oxide ions have been studied in inductively coupled plasma mass spectrometry as a function of the sampling position, the carrier gas flow rate and the efficiency of the energy transfer from the plasma to the sample, in order to support the hypothesis of analyte oxide formation in the plasma. Lanthanum was selected as the test species owing to its high oxide bond strength, and its behaviour was compared to that of Pb as this element has a low oxide bond strength. A prototype ICP mass spectrometer was used. The LaO+: La+ ratio was found to be in the 0.2–13 000% range under the operating conditions used. Energy transfer was either degraded by adding a sheathing gas or improved by adding hydrogen. The LaO+: La+ ratio was minimized for low carrier gas flow rates and an efficient energy transfer. This was corroborated by temperature optical measurements. The results are in good agreement with those found in other recent work. In any instance, the role of the sampling position was found to be crucial in studying analyte oxide ion behaviour and optimizing analytical performance.
用于阐明电感耦合等离子体中分析物转化机制的动态模型。
影响因子：
7.4
作者：
Li,KP;Dowling,M;Fogg,T;Yu,T;Yeah,KS;Hwang,JD;Winefordner,JD
通讯作者：
Winefordner,JD