local fraction volatilized \(\chi _{\text{v}}\), \(\beta_{\text{v}}\)

in flame emission and absorption spectrometry
https://doi.org/10.1351/goldbook.L03606
The @S06075@ of the volatilized component in the total desolvated component. The gaseous state includes free atoms, molecules and radicals. This quantity is measured in a defined part of the flame, usually the observation space. The fraction volatilized varies inversely with the size of the desolvated particles. Since \(\chi _{\text{v}}\) varies markedly with the height in the flame, its observed value represents an average.
Sources:
Orange Book, 2nd ed., p. 168 [Terms]
PAC, 1986, 58, 1737. (Quantities and units in clinical chemistry: Nebulizer and flame properties in flame emission and absorption spectrometry (Recommendations 1986)) on page 1741 [Terms] [Paper]