Mass Spectra -- determining the method of ionization

[Chemmjr18]

Is there a way to look at mass spectra and determine the method of ionization? I.e., whether it's electrospray, FAB, MALDI, etc.

 

[HAYAO]

EDIT: Actually, the question is quite vague so let me clarify. Are you asking if you can determine what ionization method was used just by looking at the spectra? Or are you asking if you can determine what ionization method should be used based on the spectra?

If the former, then no. The spectrometer itself is a different unit and it doesn't matter what ionization technique is used.