The Relative sensitivity factors (RSFs) of many elements in Fe, Ni, Cu, Al and Ti-based metals or alloys were determined with reference to the respective matrices using pin-shaped and disk-shaped samples. The RSFs of the elements that were obtained for both the Fe-matrix and another matrix were compared. There was a strong correlation between the RSFs for the Fe-matrix and each of the other matrices and the proportional coefficients were determined for the Ni,Cu,Al and Ti matrices using the method of least squares. Then, all the RSFs for these matrices were multiplied by the respective proportional coefficients. These RSFs can be regarded to have been determined with reference to Fe. Matrix dependence of the RSFs was not recognized. However, the RSF of Al matrix is larger than the RSF in the case of element in the relevant matrices. The RSFs of Al in the respective matrices have been determined at different concentrations. The RSFs of Al depend on the concentration. These are larger for larger concentrations. On the other hand, the RSFs of Fe, Ni, Cu and Ti do not show such a clear dependence on the concentration as Al. The results show that there is a possibility that a non-linear process affect the ionization of elements in glow discharge mass spectrometry.
