TABLE OF CONTENTS | ADC | analog-to-digital converter | |
| AE | appearance energy | |
| AMS | accelerator mass spectrometry | |
| amu | atomic mass unit, now u | |
| AP | appearance potential | |
| APCI | atmospheric-pressure chemical ionisation | |
| B | magnetic sector mass analyser; magnetic field strength (in italics) | |
| B/E | magnetic sector linked scan constant for fragment ions | |
| B 2/E | magnetic sector linked scan constant for precursor or parent ions | |
| CA | collisional activation | |
| CAD | collisionally activated dissociation | |
| CE | capillary electrophoresis | |
| CF-FAB | continuous-flow fast atom (or ion) bombardment | |
| CI | chemical ionisation | |
| CID | collision-induced dissociation | |
| CR | charge reversal | |
| Da | Dalton | |
| DE | delayed extraction, also time-lag focusing (TLF) | |
| E | electric sector mass analyser; electric sector voltage | |
| EA | electron affinity | |
| ECD | electron-capture dissociation | |
| EE | even-electron ion | |
| EI | electron ionisation; electron impact | |
| EM | electron multiplier | |
| ESI | electrospray ionisation | |
| ESI-MS or ESIMS | electrospray ionisation mass spectrum, spectrometry or spectrometer | |
| e | charge of an electron; one electron has a charge of 1.602 10 ?19 Coulombs (C) | |
| eV | electron volt | |
| FA | flowing afterglow | |
| FAB | fast-atom bombardment | |
| FD | field desorption | |
| FFR | field free region | |
| FT-ICR | Fourier-transform ion cyclotron resonance, also FT-MS | |
| FWHM | full-width at half maximum | |
| GC | gas chromatography or chromatograph | |
| GC-MS | gas chromatography-mass spectrometry | |
| ICP-MS | inductively coupled plasma mass spectrometry | |
| ICR | ion cyclotron resonance | |
| IE | ionisation energy | |
| IMS | ion mobility spectrometry | |
| IT | ion trap, also quadrupole ion trap (QIT) |
