Solvent extraction of beryllium from malonate solutions with liquid anion exchangers

Beryllium was quantitatively extracted at p H 5.5-7.0 in microgram amounts with 0.06M Aliquat 336S in xylene from 5 x 10 exp --3 M malonic acid solution, stripped with 0.5M hydrochloric acid and determined spectrophotometrically at 523 nm as its complex with thorin. Those metals which could not form...

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Bibliographic Details
Published in:Analytical chemistry (Washington) 1983-12, Vol.55 (14), p.2320-2323
Main Authors: Rao, R. Raghunadha, Khopkar, S. M
Format: Article
Language:English
Subjects:
Analysing. Testing. Standards
Analytical chemistry
Applied sciences
Chemistry
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Materials science
Materials testing
Metals, semimetals and alloys
Metals. Metallurgy
Physics
Specific materials
Spectrometric and optical methods
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Summary:Beryllium was quantitatively extracted at p H 5.5-7.0 in microgram amounts with 0.06M Aliquat 336S in xylene from 5 x 10 exp --3 M malonic acid solution, stripped with 0.5M hydrochloric acid and determined spectrophotometrically at 523 nm as its complex with thorin. Those metals which could not form anionic complexes with malonic acid and were not extracted from Be at p H 6.5 were separated from it. Metals forming weak malonato complexes were scrubbed from the organic phase with water. The elements such as Bi, Sb, Fe, uranium, Ga and vanadium, which form strong malonato complexes, were separated by selective stripping with hydrochloric, sulfuric or nitric acid. The method was extended for the analysis of Be in beryl and Be alloys. 12 ref.--AA
ISSN:0003-2700
1520-6882
DOI:10.1021/ac00264a027