Atomic Absorption Spectroscopy (AAS) is an analytical technique used for the quantitative determination of metal elements in various types of samples. It measures the absorption of light by free atoms in the gaseous state at specific wavelengths.
AAS is widely used to determine the concentration of metals such as iron (Fe), copper (Cu), zinc (Zn), lead (Pb), cadmium (Cd), calcium (Ca), and magnesium (Mg) in environmental, food, pharmaceutical, chemical, and industrial samples.