Abstract
The fixed time integration technique of photoelectric emission spectrochemical analysis was employed to determine C, Si, Mn, Mo, Cu, Ti, Nb and Al in various kinds of stainless steels with the same calibration curves for each element.
The spectral intensities were measured in 3 seconds of fixed time integration without internal standard of Fe.
It was confirmed with using Fe-X binary alloys that the following elements interfered to the spectral lines of analytical elements; Al for C I line, Mo for Si I line, Mo and Nb for Ti II line, Mo, W, V, and Ti for Nb II line and Mo for Al I line. No interference was found for Mn II Mo and Cu I lines in this method.
The above seven elements except carbon were determined with the calibration curves which were corrected the above interference and independent of the kinds of stainless steels. Only the calibration curve of carbon was consisted of two curves of austenitic and ferritic stainless steels.
Although the instrument was not designed for the fixed time integration method, good accuracy and reproducibility were obtained.
