Atomic Emission Spectroscopy
A technique that identifies and quantifies elements from the light their excited atoms emit.
Unit
ppm
In depth
A high-temperature source excites the atoms, and the emitted wavelengths identify the elements while the intensities give their concentrations. Because all elements emit simultaneously, the technique is inherently multi-element, unlike absorption methods.
Examples in the real world
An inductively coupled plasma at 8000 K determining thirty elements in a single run.