Determination of aluminum in nonferrous materials

• Publisher: Elsevier Science
• Year: 1938
• Tongue: English
• Weight: 55 KB
• Volume: 226
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/s0016-0032(38)90446-6

✦ Synopsis

NATIONAL BUREAU OF STANDARDS NOTES.

[J. F. I.

nitric, and sulfuric acids, and from most of the copper, zinc, lead, etc., in brasses and bronzes by digestion in nitric acid, or precipitation by ammonium hydroxide after solution in aqua regia. The three elements are then converted to sulfates, the arsenic and antimony reduced to the trivalent state, and the three then separated by fractional distillation and determined by titration. The results for antimony and tin obtained by this method are more accurate than those obtained by so called direct titration methods. Since the method provides for the isolation of these elements, positive identification of very small amounts of these constituents is facilitated.

DETERMINATION OF ALUMINUM IN NONFERROUS MATERIALS.