Term: local fraction atomized, \(\chi _{\text{a}}\), \(\beta_{\text{a}}\)
https://doi.org/10.1351/goldbook.L03604

Definition:
The substance fraction of the atomized component in the total volatilized component. This quantity is measured in a defined part of the flame, usually the observation space. The fraction atomized is the result of chemical reactions in the gaseous state. It depends on the bond strength of the compounds that the component may form within the flame and on the composition and temperature of the flame. When analysing elements that tend to become oxidized in the flame, it may be advisable to use as fuel gas mixtures with a reducing component such as C2H2 or N2O.

Related Terms:
1) substance fraction (http://doi.org/10.1351/goldbook.S06075).

Source: Orange Book, 2nd ed., p. 168 (https://media.iupac.org/publications/analytical_compendium/)

Citation: 'local fraction atomized, \(\chi _{\text{a}}\), \(\beta_{\text{a}}\)' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.L03604

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