title: Fluorimetric determination of aluminium in water by sequential injection through column extraction.
abstract: A fluorimetric procedure for the determination of aluminium with matrix removal in drinking water is proposed. The system is based both on the solid phase extraction of aluminium on a new chelating resin (XAD-4 modified by grafting salicylic acid) and the fluorimetric detection of a complex formed between 8-hydroxyquinoline-5-sulfonic acid (HQS) and Al(III), after elution of the resin by hydrochloric acid. The sorption and elution of aluminium were studied in both competitive and noncompetitive conditions, varying pH, flow-rates, volume and concentration of reagents, as well as time contact. The optimised procedure allows determination of Al3+ at the sub-ppb level (LOD: 0.2 microg L(-1) for 1 ml of sample) within a working range of 0.2-500 microg L(-1). The analytical procedure was successfully employed for the determination of aluminium in drinking water during and after flocculation/coagulation treatment processes.
authors.affiliation: Laboratoire de Chimie et Environnement, EA 2678, Université de Provence, 3 Place Victor Hugo, Case 29, 13331 Marseille, France.
authors.forename: C
authors.initials: C
authors.lastname: Brach-Papa
authors.forename: B
authors.initials: B
authors.lastname: Coulomb
authors.forename: C
authors.initials: C
authors.lastname: Branger
authors.forename: A
authors.initials: A
authors.lastname: Margaillan
authors.forename: F
authors.initials: F
authors.lastname: Théraulaz
authors.forename: P
authors.initials: P
authors.lastname: Van Loot
authors.forename: J L
authors.initials: JL
authors.lastname: Boudenne