Mass Spectrometry � Source
Source:produces charged particles (ions)
��� Electron Impact (EI)�� -�� Hard (fragments) / 1000 Da
��� Chemical Ionization (CI) � (methane / isobutane / ammonia)
��� Fast Atom Bombardment (FAB) � 6keV xenon atoms
��� Electrospray Ionization (ESI)-Soft / 200kDa
��� Matrix-Assisted Laser Desorption Ionization- Soft / 500kDa