The small hole electrodes, silicon controlled D.C. light source and pure graphite powder two times the amount of the sample are used in the determination. Such amount of graphite may act broth as a buffer and a carrier, diminishing the influence of increased intensity caused by the impurities of the additional buffer and carrier, increasing the intensity of spectral line of V and Ni and decreasing the differences in the fundamental elements between the base and the sample at the same time. The error of average square-root for Ga, Ti, Ba, V, Ni, Cu, Mn and Cr are ±5 .4, ±5 .4, ±5.0, ±10.4, ±7.8, ±9.0. ±10 and ±8.1% respectively.