in spectrochemical analysis
Also contains definition of: selective digestion in spectrochemical analysis
https://doi.org/10.1351/goldbook.P04411
In partial digestion and/or selective digestion procedures only part or some of the analytes present are brought into solution. This may be preferred to total
decomposition
if relative concentrations of the analyte in the test samples provide sufficient information (e.g. materials for geochemical exploration).