Glow Discharge Mass Spectrometry

**Semantic type:** Laboratory Procedure

**Definition:** A mass spectrometry technique in which a solid sample is atomized and ionized by sputtering in low-pressure direct-current plasma prior to the separation and detection of the ions in a mass analyzer. This technique is utilized to analyze trace and ultra-trace elemental constituents of inorganic materials.

**Synonyms:** - GD-MS - GDMS