Article ID Journal Published Year Pages File Type
1209401 Journal of Chromatography A 2007 6 Pages PDF
Abstract

A highly sensitive and selective capillary zone electrophoresis with laser-induced fluorescence detection (CZE-LIF) for Al3+ and Ga3+ was developed using a calcein 4′,5′-isomer as a pre-capillary complexing agent. Direct fluorescent detection without an agent added to the carrier buffer provided the notable detection limits of 3.9 × 10−10 and 4.6 × 10−10 mol dm−3 for Al and Ga, respectively. By applying this system successfully to a river water sample, its potential for practical applications was ascertained. A comparison of three aromatic polyaminocarboxylate ligands related to the coordination structure and the distance between the fluorophore and the chelating moiety, revealed some interesting factors regarding their selectivity.

Related Topics
Physical Sciences and Engineering Chemistry Analytical Chemistry
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