A method for detecting and identifying 23 aromatic sulphonates in natural waters was optimized. Samples were pretreated by solid-phase extraction in order to eliminate interferents and to preconcentrate the analytes. Separation of the extracted analytes was accomplished by ion-pair HPLC with fluorimetric detection; the eluent composition and pH were optimized. The detection limits lie in the low mug l-1 range. Some of the investigated compounds were found in the water of the river Bormida (N.W. Italy). Unknown components were identified from their fluorescence spectra.
DETERMINATION AND IDENTIFICATION BY HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHY AND SPECTROFLUOROMETRY OF 23 AROMATIC SULFONATES IN NATURAL-WATERS
ZERBINATI, Orfeo;OSTACOLI, Giorgio;GASTALDI, Daniela;ZELANO, Vincenzo
1993-01-01
Abstract
A method for detecting and identifying 23 aromatic sulphonates in natural waters was optimized. Samples were pretreated by solid-phase extraction in order to eliminate interferents and to preconcentrate the analytes. Separation of the extracted analytes was accomplished by ion-pair HPLC with fluorimetric detection; the eluent composition and pH were optimized. The detection limits lie in the low mug l-1 range. Some of the investigated compounds were found in the water of the river Bormida (N.W. Italy). Unknown components were identified from their fluorescence spectra.
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