This document discusses atomic emission spectroscopy. It begins by explaining emission and emission spectra. It then defines atomic emission spectroscopy as a procedure that uses the intensity of light from an excitation source like a plasma or flame at a specific wavelength to determine the quantity of an element in a sample. It discusses various excitation sources like flames, plasmas, sparks, arcs, and lasers. It also covers instrumentation, sample atomization methods, considerations for quantitative analysis, factors affecting accuracy, precision, sensitivity and selectivity.