Analusis 26, 53-60 (1998)
DOI: 10.1051/analusis:1998110

Les méthodes chromatographiques et électrophorétiques récentes d'analyse des phosphates inorganiques

R. Rosset, F. Hui, J. Xie, H. Kolodziejczyk and B. Bayri

Laboratoire de Chimie analytique des Processus industriels, École Supérieure de Physique et Chimie Industrielles de la Ville de Paris, 10, rue Vauquelin, 75005 Paris, France

Abstract
Following a classification of phosphates according to modern rules of nomenclature, the separation of complex mixtures of linear and cyclic condensed phosphates is described. Three methods are evaluated: ion exchange liquid chromatography with chloride concentration gradient, ion chromatography associated with conductometric detection which allows rapid separations (~ 30 minutes), capillary electrophoresis with indirect absorptiometric detection, this technique being, for the moment, restricted to the first terms of phosphates (ortho, di and triphosphate).

Key words: Linear and cyclic condensed phosphates / ion exchange liquid chromatography / ion chromatography / conductometric detection / capillary electrophoresis.


© EDP Sciences, Wiley-VCH 1998