The emission spectroscopy of some elements in high-temperature flames

Abstract

The emission of atoms of a large number of elements in laminar high-temperature acetylene-N2O, H2-N2O, H2-O2, acetylene-air, and H2-air flames was studied; of these the most suitable are flame mixtures containing N2O. Methods were developed for determining Ca, Sr, Ba, for Cu, Cr, Mn and Ni in steels and for Cu, Fe, Mn and Ni in aluminium alloys using an acetylene-N2O flame. A small chemical interference for the matrix elements was found provided that a monochromator with good resolution and with a small amount of scattered light was employed. These conditions are fulfilled by most modern atomic absorption instruments with which comparable results are obtained.