Analysis of High-Purity Chromium
A combination chemical-spectrographic method for determining metallic impurities in high-purity chromium is described. Chromium is removed from the metallic impurities by volatilization as chromyl chloride. The remaining solution is examined spectrographically for elements such as iron, nickel, aluminum, manganese, titanium, vanadium, magnesium, and copper in the 0.1- to 30-ppm range. Direct arcing of chromic sulfate is used for the determination of silicon.
KeywordsImpurity Element Metallic Impurity Cobalt Metal Chromium Metal Chromic Sulfate
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- 4.G. F. Smith, Mixed Perchloric Sulphuric, and Phosphoric Acids and Their Applications in Analysis, 2nd ed., G. Fredric Smith Chemical Co., Columbus, Ohio (1942).Google Scholar