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本文讨论丁乙醇导入ICP时多谱线斜率法浏盈激发温度关于测温谱线选择的几个问题:激发温度与测温谱线的上能级有关;在摄谱谱法中,测温谱线的强度宜尽量相近;测温谱线应免受光谱干扰且无自吸。据此选择了一组Fe(Ⅰ)测温谱线。初步研究了乙醇对Ar-ICP激发特性的影响发现乙醇引入不仅引起ICP激发温度的变化,而且导致ICP对局部热平衡偏离程度的减小。
This article discusses several import problems when the ethanol is introduced into ethanol by using the multi-spectral slope method. Some problems about the selection of the temperature measurement line: the excitation temperature is related to the upper energy level of the temperature measurement line; in the spectrographic method, the temperature measurement spectrum The intensity of the line should be as close as possible; the temperature measurement line should be free from spectral interference and no self-absorption. Accordingly, a set of Fe (Ⅰ) temperature measurement line was selected. The effect of ethanol on the excitation characteristics of Ar-ICP was studied preliminarily. It was found that the introduction of ethanol not only caused the change of ICP excitation temperature, but also caused the decrease of local thermal equilibrium deviation.