DETERMINATION OF A VARIETY OF CHEMICAL CLASSES OF PESTICIDES IN SURFACE AND GROUND WATERS BY OFF-LINE SOLID-PHASE EXTRACTION, GAS-CHROMATOGRAPHY WITH ELECTRON-CAPTURE AND NITROGEN-PHOSPHORUS DETECTION, AND HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHY WITH POSTCOLUMN DERIVATIZATION ANDFLUORESCENCE DETECTION
I. Vassilakis et al., DETERMINATION OF A VARIETY OF CHEMICAL CLASSES OF PESTICIDES IN SURFACE AND GROUND WATERS BY OFF-LINE SOLID-PHASE EXTRACTION, GAS-CHROMATOGRAPHY WITH ELECTRON-CAPTURE AND NITROGEN-PHOSPHORUS DETECTION, AND HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHY WITH POSTCOLUMN DERIVATIZATION ANDFLUORESCENCE DETECTION, Journal of chromatography, 823(1-2), 1998, pp. 49-58
Citations number
22
Categorie Soggetti
Chemistry Analytical","Biochemical Research Methods
Octadecyl (C-18)-bonded porous silica was evaluated for the extraction
of triazines, organochlorine, carbamates and acidic pesticides from s
urface and ground water. Gas chromatography with selected detection me
thods (electron-capture detection, nitrogen-phosphorus detection, mass
spectrometry) and liquid chromatography-post-column derivatization fl
uorescence detection was employed for the determination of 32 pesticid
es. Recoveries varied from 52 to 102%. The recoveries of triazines obt
ained using C-18 extraction cartridges and conventional liquid-liquid
extraction (LLE) are compared. The Limit of detection for seventeen or
ganochlorine compounds was better than 0.003 mu g/l and the limit of d
etection for other 15 analytes was better than 0.06 mu g/l. The propos
ed analytical methodology was applied to analyze pesticides in surface
and ground-water samples of the Lassithi Plateau, Crete, Greece. (C)
1998 Elsevier Science B.V. All rights reserved.