The spectrochemical analysis of silicate glass has been accompanied by many variables associated with the structure of the sample. Difference in particle size, distribution of the constituents in sample & other factors introduced by heat treatment or existence of extraneous elements produce undesirable variations in the spectral excitation characteristics. In this study, in order to trace the possible cause of the influence from such elements, various quantities of Ba,Pb,Zn,Cd,Na & K were added to Li2O-(Na2O)-B2O3-SiO2-CaO (MgO,Al2O3,MnO & Fe2O3) glass to check variation of the ratio of the analytical line pair and of the fixing line pair in multi-component systems. The elements which affected the quantitative determination of CaO,MgO,Al2O3,MnO & Fe2O3 were Zn,Cd,Na & K. When the extraneous elements did not influence the ratio of the fixing line pair, the analytical line pair was not affected either.
