Page 41 - An Introduction to Analytical Atomic Spectrometry - L. Ebdon
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measured at the lines obtained when metal ions are sprayed into the flame. Provided there is no self-
absorption and the transition probabilities of the lines are known accurately, the flame temperature can
be calculated from the ratio of line intensities using the Maxwell-Boltzmann distribution.
Flame temperature varies from one part of the flame to another, as indicated in Section 2.2.2. Figures
2.5 and 2.6 show this effect for a stoichiometric and a fuel-rich flame, respectively.
Figure 2.5
Temperature distribution in a near stoichiometric premixed air-natural gas
flame. Temperatures in °C.
