1990 Volume 76 Issue 12 Pages 2198-2205
Interference effects of carbon, silicon and manganese on optical emission spectrochemical analysis for sulfur in steel were investigated using binaly (Fe-S) and ternary (Fe-S-X) samples.
Multiplicative interference was observed between S and C, and S and Si. The effect of Mn on S determination is due to combination of neighbouring line and multiplicative interference.
Multiplicative interference is diminished by the improvement of the source condition, extending pre-burn time, or using high energy pre-burn, or using special combined spark and dividing measurement, and to apply the Pulse Distribution Analysis (PDA) method.
The accuracy of determination for S is improved using dj·ljcorrection method.