Glow Discharge Mass Spectrometry
About MSI - Mass Spec Instruments for elemental, molecular & isotopes
The GD90 is a Glow Discharge HR high resolution MS offering direct elemental analysis (matrix to ultra-trace) in a variety of materials.
Glow discharge occurs on a molecular level by applying a potential difference between the anode and the cathode (analyte). As atomization and ionization occur separately, minimal matrix effects are observed. This makes it possible to use a standard Relative Sensitivity Factors (RSF) data set for all analyses.
After atomization and ionization in the plasma, the ions (M+) diffuse outside the cell and are accelerated down the flight path, through the electrostatic analyzer (ESA) and the magnetic analyzer (the magnet) to increase ion separation before detection by either the electron multiplier or Faraday cup, depending on signal intensity.
