How aas is used in heavy metal analysis?

Atomic Absorption Spectroscopy (AAS) is a technique used in heavy metal analysis to determine the concentration of metals in various samples. In this method, a sample is atomized in a flame or graphite furnace, and the metal atoms absorb light at specific wavelengths corresponding to their unique energy levels. The amount of light absorbed is proportional to the concentration of the metal in the sample, allowing for quantitative analysis. AAS is particularly effective for detecting trace levels of heavy metals in environmental, biological, and industrial samples.