电子轰击电离 Electron Impact Ionization, EI
化学离子化 Chemical Ionization, CI
场电离,场解吸 Field Ionization FD, Field Desorption FD
快原子轰击 Fast Atom Bombardment, FAB
基质辅助激光解析电离 Matrix-Assisted Laser Desorption Ionization, MALDI
电喷雾电离 Electrospray Ionization, ESI
大气压化学电离 Atmospheric Pressure Chemical Ionization, APCI