glow discharge spectroscopy

Glow discharge spectroscopy (GDS) is an analytical technique used to identify and measure the elements present in a solid material. It works by creating a low-pressure plasma (a glowing, electrically charged gas) that etches away tiny amounts of the sample’s surface. As this material is sputtered off, it emits light (glow) characteristic of its elemental composition. By analyzing this light, scientists can determine which elements are in the sample and their concentrations. GDS provides precise, rapid, and in-depth elemental analysis, making it useful in quality control, materials research, and forensic investigations.