Glow Discharge Mass Spectrometry Quad (GD-MSQ)

  Glow Discharge Mass Spectrometry (GD-MSQ) is a very rapid, robust analytical tool for monitoring elemental compositions and impurities in materials based on glow discharge atomization/ionization source combined with easy-to-use Quadrupole mass analyzer. 

Besides full survey elemental, layers, depth profiling, mapping and more with very high depth and mass resolutions.

GDMS is a powerful tool for advanced materials (metals, alloys, graphite, electronic materials, oxides and ceramics)

Full elemental analysis of major (wt. %) to ultra-trace elements within a single run.

• Direct solid sampling technique, thus alleviating the need for chemical digestion
• High resolution capabilities from 1 to 300 amu 
• Dual quadrupole version also sold and in-use
• A proven technique for high sensitivity depth-dependent distribution analysis of trace elements in coatings and other multi-layered advanced materials
• Minimal matrix effects allow calibration without matrix matched standards by using Relative Sensitivity Factors (RSF)

The GD-MS-QQ quadrupoles serve as ion guides and are arranged in tandem with a total length of 56.5 cm. Both ion guides were operated in RF-only mode driven by a self-oscillating dual-output RF power supply operating at a frequency of 2.25 MHz. For the reactions described herein, the RF amplitude was optimized for transmission/production of individual reactant ions and varied between 600 and 700 V (peak-to-peak). The first ion guide passes through a 20.0 cm long collision cell with 8 mm entrance and exit apertures.

  The second ion guide extends from the collision cell to the quadrupole deflector (turning lens). In operation, metal ions exiting the glow discharge are directed into the first ion guide through a 3 mm aperture. These ions were then passed through the collision cell where interactions with the reagent gas mixture occurred.