Abstract
As simple method of semi-quantitative spectrochemical analysis which may require no standard sample, utilizing N.B.S.Tables of Spectral-Line Intensities was thought out and studied by universal source unit.
Generally, the observed spectral intensity (I) is described as a function of the concentration (C) with the constant term (K) and (α), that is“I=KCα, ”then the values of (α) and (K) of several elements were investigated from the relationship of N.B.S.intensities and observed intensities.Consequently, the values of (α) were almost equal and of (K) were closely similar for the same sample under fixed experimental conditions.Then the following semi-quantitative method using only one standard sample was actually tested on some alloys.
(A) For elements contained in a standard sample, only the values of (K) were measured and their working curves were drawn with a constant inclination (α).
(B) For elements not contained in a standard sample, (K) of other elements were substituted into them.
In the case of (A), average error was 30-50%and, in case of (B), close to accuracy of order was obtained.
