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Determination of aluminium using high performance chelation ion chromatography


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Tria, J, Haddad, PR and Nesterenko, PN 2008 , 'Determination of aluminium using high performance chelation ion chromatography' , Journal of Separation Science, vol. 31, no. 12 , pp. 2231-2238 , doi: 10.1002/jssc.200800046.

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The suitability of high performance chelation ion chromatography (HPCIC) using postcolumn reaction for the separation and determination of dissolved aluminium in complex samples was investigated. Use of a chelating ion-exchanger allowed for differentiation between kinetically labile and kinetically stable species of aluminium. Separation through a combination of chelation and cation-exchange was achieved using a 200×4.0 mm id column packed with particles of silica functionalised with iminodiacetic acid, with nitric acid-potassium chloride eluents. A temperature anomaly causing a five-fold increase in column efficiency for aluminium is believed to be a result of localised temperature effects in the particular type of instrument used. Postcolumn reagents investigated for the photometric detection included Tiron, Pyrocatechol Violet, Chrome Azurol S, and Eriochrome® Cyanine R. The lowest detection limit (2.7 {micro}g/L for a 100 {micro}L sample volume) was achieved using 0.25 mM Eriochrome Cyanine R in 0.2 M hexamine (pH 6.1) with 1 mM cetyltrimethylpyridium bromide (CTAB). The optimised HPCIC system was applied successfully to the quantification of labile aluminium in paper mill process water.

Item Type: Article
Authors/Creators:Tria, J and Haddad, PR and Nesterenko, PN
Keywords: Aluminium • High performance chelation ion chromatography • Postcolumn reaction
Journal or Publication Title: Journal of Separation Science
ISSN: 1615-9306
DOI / ID Number: 10.1002/jssc.200800046
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