Absorption spectrometry is the absorption of light by atoms providing a powerful analytical method for both qualitative and quantitative analysis. Atomic absorption spectroscopy (AAS) is based on the principle that free atoms can absorb light of a certain wavelength.
The absorption wavelength of each element is specific and unique. AAS is a method based on a single element used to reconstitute the analysis of the metals in biological, pharmaceutical and atmospheric samples for example.
The spectroscopic determination of atomic species can only be carried out using a sample in the gaseous state in which the individual atoms such as Ag, Al, Au, Fe and Mg are clearly separated from each other.