Separation of Iron, Cobalt, Nickel, and Copper from Aluminum Fluoride and Their Determination by Graphite Furnace Atomic Absorption Spectrometry

✍ Scribed by J. Jaganathan; I. Aggarwal

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 191 KB
• Volume: 50
• Category: Article
• ISSN: 0026-265X
• DOI: 10.1006/mchj.1994.1056

✦ Synopsis

An analytical method for the determination of iron, cobalt, nickel, and copper in aluminum fluoride has been described. The insolubility of (\mathrm{AlF}{3}) in inorganic acids makes it necessary to separate these metals by leaching them with (\mathrm{HNO}{3}). The metals that leached out were quantitated with graphite furnace atomic absorption spectrometry. The results were compared with those obtained from spark source mass spectrometry and were found to agree within (10 %) error. The methodological detection limits which are based on the entire analytical protocol, for (\mathrm{Fe}, \mathrm{Co}, \mathrm{Ni}), and (\mathrm{Cu}) were (3,1,2), and (2 \mathrm{ppb}), respectively. The proposed method has been shown to separate quantitatively the elements desired from the complex matrix of (\mathrm{AlF}_{3}), thus eliminating the tedious and time-consuming solvent extraction methods. 1994 Academic Press, Inc.