Organic Mass Spectrometry is a name for a collection of techniques used to measure the masses of organic ions and their abundance in the gas phase
Organic Mass Spectrometry is a name for a collection of techniques used to measure the masses of organic ions and their abundance in the gas phase
Main Components of Mass Spectrometers Off-line separation vacuum system Ion mass detector source analyser On-line separatio computer
Main components of OMS lon Sources Mass Analyzer Main Specification of OMs
Main components of OMS • Ion Sources • Mass Analyzer • Main Specification of OMS
Ion sources for organic mass spectrometry Basic type Name and acronym lonizing agent Gas phase Electron impact(El) Energetic electrons Chemical ionization( CI) Reagent gaseous ions Field ionization (FI) High-potential electrode Desorption Field desorption ( FD High-potential electrode Electrospray ionization(ESI) High electrical field Matrix-assisted laser desorption ionization MALDi) Laser beam Plasma desorption (PD) Fission fragments from 252Cf Fast atom bombardment( FAB Energetic atomic beam Secondary ion mass spectrometry SIMs) Energetic beam of ion Thermospray ionization ( TS High temperature
Ion sources for organic mass spectrometry Basic type Name and acronym Ionizing agent Gas phase Electron impact ( EI ) Energetic electrons Chemical ionization ( CI ) Reagent gaseous ions Field ionization ( FI ) High-potential electrode Desorption Field desorption ( FD ) High-potential electrode Electrospray ionization ( ESI ) High electrical field Matrix-assisted laser desorption ionization (MALDI ) Laser beam Plasma desorption ( PD ) Fission fragments from 252Cf Fast atom bombardment ( FAB ) Energetic atomic beam Secondary ion mass spectrometry ( SIMS ) Energetic beam of ion Thermospray ionization ( TS ) High temperature
Gas phase sources: the sample is first vaporized and then ionized Desorption sources the sample in a solid or liquid state is converted directly into gaseous ions
Gas phase sources : the sample is first vaporized and then ionized Desorption sources : the sample in a solid or liquid state is converted directly into gaseous ions