Abstract

Cobalt has been found to be an acceptable internal standard for the spectrographic determination of boron in shale. Its use leads to acceptable agreement between spectrochemical and wet-chemical analyses, and has given an average coefficient of varation of ±3.57% for 57 clay samples.

The Quantitative Spectrographic Analysis of the Rare Earth Elements*I. Determination of Samarium in NeodymiumII. Determination of Europium in Samarium

Velmer A. Fassel and Harley A. Wilhelm
J. Opt. Soc. Am. 38(6) 518-526 (1948)

Spectrochemical Determination of the Major Constituents of Minerals and Rocks

Aslak Kvalheim
J. Opt. Soc. Am. 37(7) 585-592 (1947)

The Effect of Alkali and Alkaline Earth Salts on the Spectrographic Determination of Strontium*

E. Fast and J. Rud Nielsen
J. Opt. Soc. Am. 37(8) 614-622 (1947)

Spectrographic Determination of Halogens and Sulfur in Engine Deposits

W. O. Mansfield, J. C. Fuhrmeister, and D. L. Fry
J. Opt. Soc. Am. 41(6) 412-416 (1951)

The Quantitative Spectrographic Analysis of the Rare Earth Elements* III. Determination of Major Constituents in Complex Mixtures

Velmer A. Fassel
J. Opt. Soc. Am. 39(2) 187-193 (1949)