A database was designed starting from the Kurucz cd-rom N0 23 of the Smithsonian Astrophysical Observatory. In this database the different atomic elements are ordered by wavelength with their ionization levels. Also, there are other data like statistic weight, Einstein’s coefficient, information about energy levels, constant of damping, among others. The spectra of the discharge are processed using a digital filtrate technique, with the purpose of reducing the noise present in the data to locate the points where the maximum amplitudes are presented. Starting from these results, consultations dynamic SQL are made, these obtain the elements present in these regions from the database. Finally, by means of the use of statistical methods it is determined which are the elements that have the highest probability of conform with the plasma.