Principle of atomic emission analysis

As in FES, the light source of the spectrometer is nothing other than the sample of which all the atoms have been excited. Qualitative analyses of unknowns can therefore be made. This marks an important difference from atomic absorption in which measurements can only be made for elements for which the instrument has been customized (choice of the hollow cathode lamp). Erom a single run, a multielement analysis can be obtained in strict contrast to AAS. However only elements for which a calibration has been carefully undertaken can really be measured. 

Each atom, once in the excited state can lose its excess energy by emission of one or several photons of which the energies can have many different values (Eigure 14.2). Eor a sample, the dispersive system discloses radiation of a multitude of different wavelengths and intensities. Eor a given sample, the matrix (all 

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