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 inTalanta (Oxford) Vol. 40; no. 7; pp. 1059 - 1066
Main Authors Molina-Diaz, A., Herrador-Mariscal, J.M., Pascual-Reguera, M.I., Capitan-Vallvey, L.F.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 01.07.1993
Oxford Elsevier
Subjects
Analytical chemistry
Chemistry
Exact sciences and technology
Spectrometric and optical methods
Trace analysis
Water
Absorption spectrometry
Chemical analysis
Chromogenic reagent
Visible spectrometry
Aluminium
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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.
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ISSN:0039-9140
1873-3573
DOI:10.1016/0039-9140(93)80166-O