What does AAS stand for in the context of elemental analysis?

AAS stands for Atomic Absorption Spectrometry, a widely used analytical technique in elemental analysis. This method measures the concentrations of elements in a sample by detecting the absorption of light. In Atomic Absorption Spectrometry, a sample is atomized, typically using a flame or graphite furnace, and then exposed to light from a specific hollow cathode lamp corresponding to the element being analyzed. When light passes through the vaporized sample, atoms absorb specific wavelengths of light, and the amount of light absorbed is proportional to the concentration of the element in the sample.

This technique is highly valued for its sensitivity and ability to analyze trace elements in various matrices, including environmental samples, biological materials, and food products. Its importance in laboratory and field settings makes it essential knowledge for those involved in lead inspection and risk assessment, as accurate detection of metals is crucial for evaluating safety and compliance with health standards.