Some Basic Experiments on the Selection of Line Pairs in Quantitative Spectrochemical Analysis

Abstract

Nowadays in practice, selection of analytical line pairs is generally carried out on the bases of the excitation energies of the lines belonging a pair being as close as possible and the lines free from self-absorption.In order to obtain some of the fundamental data, the relative intensities of spectral lines emitted from Al and Cd samples under various excitation conditions have been measured. Some of the data show that the variation of relative intensity depends not only on the excitation energy and the magnitude of self-absorption but also on the kind of term of each spectral line.It is emphasized that the analytical line pairs should be selected in consideration of the kind of term beside the excitation energy and self-absorption of each spectral line.