Determination of traces of aluminium with chrome azurol S by solid-phase spectrophotometry

A microdetermination method at sub-μg/1. level for aluminium by solid-phase spectrophotometry has been developed. Chrome azurol S was used as chromogenic reagent to form a blue complex which was easily and strongly sorbed and concentrated on a dextran-type anion-exchange resin. The resin-phase absor...

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Bibliographic Details
Published in:Talanta (Oxford) 1993-07, Vol.40 (7), p.1059-1066
Main Authors: Molina-Diaz, A., Herrador-Mariscal, J.M., Pascual-Reguera, M.I., Capitan-Vallvey, L.F.
Format: Article
Language:English
Subjects:
Analytical chemistry
Chemistry
Exact sciences and technology
Spectrometric and optical methods
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Summary:A microdetermination method at sub-μg/1. level for aluminium by solid-phase spectrophotometry has been developed. Chrome azurol S was used as chromogenic reagent to form a blue complex which was easily and strongly sorbed and concentrated on a dextran-type anion-exchange resin. The resin-phase absorbances at 615 and 800 nm were measured directly. Aluminium can be determined in the 0.6–4.0 μg/1. range with a RSD of 2.1%. The method is applied to the determination of aluminium in micaschist, natural and tap water samples.
ISSN:0039-9140
1873-3573
DOI:10.1016/0039-9140(93)80166-O