Atomic Absorption Spectroscopy (AAS) is a well-established elemental analysis technology. It remains one of the most popular and cost-effective analysis tools used by chemists, physicists, and materials scientists worldwide. This second edition offers a concise introduction to AAS concepts, essential methodologies, and important applications. It has been comprehensively updated for the latest advances in AAS techniques and instruments. Highlights include: • Overviews of all basic atomic absorption concepts, including atomic line spectra theory, common sampling techniques, radiation sources, spectrometers, and detectors; • Coverage of hydride generation, cold vapor generation and electrothermal generation, as well as flow injection analysis (FIA) to enhance AAS analytical performance; • New sections on troubleshooting and quality control guidelines, chemometrics, and emerging fields of applications, including analysis of nanoparticles; and • Selected examples of standards for chemical analysis.