Quantitative Spectral Analysis. X. Determination of Lithium by Emission-Spectra

Abstract (1) Solid sample electrodes were prepared from carbon, “sirupus simplex” and varying amounts of lithium chloride and the amount of lithium chloride was spectrographically determined with a sensitivity of 3×10−5% with respect to the line at λ=6707.9 Å, and with that of 1×10−4% with respect to the line at λ=6103.6 Å. (2) The method of comparison was found to be applicable for the determination of lithium chloride throughout the range of 0.001–0.050%. (3) Several samples containing lithium were analysed by the graphical method and were found to contain 1–12×10−3% of lithium chloride. (4) Several samples of clay produced in Seto and Inuyama were found to contain 3×10−5% of lithium by the graphical method.