Abstract
The influence of sodium on emission intensity of potassium is investigated by the use of Perkin-Elmer type air-acetylene flame. By Saha's equation, partial pressures of alkali elements in flame are calculated from the degree of curvature of working curves, and from these values, the degree of ionization and the concentration of neutral atoms of sodium and of potassium in flame are calculated.
By combining the equilibrium constant of ionization reaction of sodium and that of potassium, partial pressures of neutral atoms in coexisting condition are obtained. On the assumption that the spectral line intensity is proportional to the concentration of neutral atoms, increased values of potassium are calculated from the above values, and these theoretical values are close to the experimental values except in high concentration range of sodium.
