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

An analytical method for the determination of iron, cobalt, nickel, and copper in aluminum fluoride has been described. The insolubility of AlF 3 in inorganic acids makes it necessary to separate these metals by leaching them with HNO 3. The metals that leached out were quantitated with graphite fur...

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Bibliographic Details
Published in:Microchemical journal 1994-08, Vol.50 (1), p.44-47
Main Authors: Jaganathan, J., Aggarwal, I.
Format: Article
Language:English
Subjects:
Analytical chemistry
Chemistry
Exact sciences and technology
Spectrometric and optical methods
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Summary:An analytical method for the determination of iron, cobalt, nickel, and copper in aluminum fluoride has been described. The insolubility of AlF 3 in inorganic acids makes it necessary to separate these metals by leaching them with 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 Fe, Co, Ni, and Cu were 3, 1, 2, and 2 ppb, respectively. The proposed method has been shown to separate quantitatively the elements desired from the complex matrix of AlF 3, thus eliminating the tedious and time-consuming solvent extraction methods.
ISSN:0026-265X
1095-9149
DOI:10.1006/mchj.1994.1056