✦ LIBER ✦

Colorimetric determination of aluminium(III) with chrome azurol S and the reactivity of hydrolysed aluminium species

✍ Scribed by J.A. Kennedy; H.K.J. Powell

Publisher: Elsevier Science
Year: 1986
Tongue: English
Weight: 390 KB
Volume: 184
Category: Article
ISSN: 0003-2670
DOI: 10.1016/s0003-2670(00)86501-0

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✦ Synopsis

The metallochromic reagent chrome azurol S, when used in hexamine buffer at pH 4.9, reacts rapidly with monomeric and small polymeric forms of aluminium(II1) in aged hydrolysed solutions. It is unreactive toward the polymer Aln(OH)~~ and colloidal Al(OH), and the hydroxyaluminosilicates, imogolite and allophane. The reagent is appropriate for rapid semi-quantitative analysis of labile aluminium in acid lake waters or acid soils.

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