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Application of argon as the internal standard method in glow discharge mass spectrometry

机译：氩气作为内标法在辉光放电质谱中的应用

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摘要

Using 78Ar2+ as the internal standard (argon internal standard) in glow discharge mass spectrometry (GDMS) was investigated in detail. After comparing ion intensities and interferences, i.e. of argon ions, bi-atom argon ions and tri-atom argon ions, the 78Ar2+ was selected as the internal standard in the analysis. Mass spectral behavior of the argon internal standard affected by glow discharge current and voltage were studied. The ion intensity relationship between the argon internal standard and the matrix internal standard showed that the argon internal standard and the matrix internal standard have the same corrective effect on sample analysis. The experiment proved that the effects of the difference in analysis samples and the fluctuation of discharge conditions for analytical results were efficiently reduced if the argon internal standard was used. Moreover, the argon internal standard is similar to the matrix internal standard in correcting analytical results and both give satisfactory results. Elemental content in samples can be accurately determined by using the argon internal standard when the matrix content is unknown with good results.
机译：在辉光放电质谱法（GDMS）中，以78Ar2 +作为内标（氩内标）进行了详细研究。在比较了离子强度和干扰（即氩离子，双原子氩离子和三原子氩离子）后，选择了78Ar2 +作为内标。研究了辉光放电电流和电压对氩气内标物质谱行为的影响。氩气内标和基质内标之间的离子强度关系表明，氩气内标和基质内标对样品分析的校正效果相同。实验证明，如果使用氩气内标，则可以有效减少分析样品中的差异和放电条件波动对分析结果的影响。此外，氩气内标在校正分析结果方面与基质内标相似，并且均提供令人满意的结果。当基质含量未知时，可以使用氩气内标准确地确定样品中的元素含量，并获得良好的结果。

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