holder

The following is an abstract for the selected article. A PDF download of the full text of this article is available here. Members may download full texts at no charge. Non-members may be charged a small fee for certain articles.


Emission Spectrographic Determination of Metallic Impurities in Powdered Boron

Volume 12, Number 3 (July 1958) Page 85-86

Lader, Seymour


A spectrographic method of analysis has been developed for the determination of eleven elements, in specified ranges, in powdered boron. Samples were converted to the oxide with H2O2 and nitric acid to permit the determination of greater percentages than those listed by proper dilution of the sample with pure boric oxide. The method showed an average error of estimate of ±13.6% with a maximum of ±16.6 and a minimum ±10.6 Samples from various manufacturers gave a coefficient of variation for the impurities ranging from 6% to 15%.