Elemental Analysis by Glow Discharge Mass Spectrometry (GDMS) (CAT#: STEM-EA-0214-ZJF)

Glow Discharge Mass Spectrometry (GDMS) is a form of mass spectrometry that utilizes low current electrical discharges (milliamps) in a Glow Discharge Vacuum chamber that is filled with Argon gas to generate Argon plasma. Positively charged Argon plasma ions accelerate towards the cathode, which in the case of GDMS is the test sample. By bombarding the cathode with Argon plasma, sample atoms are released at the cathode, known as sputtering. Sputtered atoms are ionized in the plasma and extracted via the anode into the mass spectrometer for detection and spectrometric analysis. Each compound has its own unique mass spectrum. High-resolution spectrometers provide a powerful technique for analyzing all trace and ultra-trace elements in inorganic materials. Direct Current (DC), Radio Frequency (RF) and pulsed Glow Discharge systems can all be used to operate the Glow Discharge ion source. For non-conductive samples, radio frequency mode is used. By using the pulsed mode, higher energy plasma ions are generated for sputtering, resulting in a greater degree of analytical sensitivity.

Metals and alloys, aerospace, semiconductors, ceramics, environmental analysis, nuclear materials, forensics, etc.

1. Sample preparation
2. Sample analysis by GDMS
3. Data output

• GDMS system
• Sample material: electroconductive samples, high purity materials, semiconductor materials, advanced materials (metals, alloys, graphite, electronic materials, oxides and ceramics), particulate materials, engineering coatings, etc.