solute-volatilization interference

in flame spectroscopy
https://doi.org/10.1351/goldbook.S05745
interference due to changes in the volatilization rate of the dry aerosol particles in the case when volatilization of the analyte is incomplete in the presence and/or absence of the concomitant. This interference can either be specific, if the analyte and interferent form a new phase of different thermostability, as when Mg and Al form MgAl2O4 in an air–acetylene flame, or non-specific, if the analyte is simply dispersed in a large excess of the interferent, as when Ag is dispersed in ThO2. If the interferent has a high boiling point, this latter is sometimes referred to as a blocking interference. It is often difficult to make sharp distinctions between the specific and non-specific solute-volatilization interferences.
Source:
Orange Book, 2nd ed., p. 136 (https://media.iupac.org/publications/analytical_compendium/)