title: Fibre-optic titrations-IV Direct complexometric titration of aluminium(III) with DCTA.
abstract: The end-point of the direct complexometric titration of Al(3+) in pH 4.6 solution can be determined by monitoring the fluorescence intensity of the aluminium-morin complex, by use of a bifurcated fibre-optic light guide. The method allows the determination of aluminium in the 1-800 ppm range with good precision. The procedure is applicable even when the solutions are strongly coloured or turbid, but because of the slow complexation kinetics requires a titration time of about 20 min.
authors.affiliation: Institute of Organic Chemistry, Karl-Franzens-University, 8010 Graz, Austria.
authors.forename: O S
authors.initials: OS
authors.lastname: Wolfbeis
authors.forename: B P
authors.initials: BP
authors.lastname: Schaffar
authors.forename: R A
authors.initials: RA
authors.lastname: Chalmers