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Simultaneous Determination of Binary Mixtures of Sulfonylurea Herbicides in Water by First Derivative Photochemically Induced Fluorescence Spectrofluorimetry

First-derivative photochemically induced spectrofluorimetry (PIF-1D) is applied to the simultaneous determination of binary mixtures of 4 sulfonylurea herbicides in aqueous micellar samples. Synthetic binary mixtures of sulfometuronmethyl with chlorsulfuron, metsulfuron-methyl, and 3-rimsulfuron, respectively, are well resolved by using the zero-crossing point procedure. PIF-1D allows the determination of binary mixtures of these herbicides with linear dynamic ranges over about 2 orders of magnitude, limits of detection between 0.5 and 52 ng/mL, and relative standard deviations within 0.3–2.9%. Application to the determination of binary mixtures of these herbicides in spiked tap water samples yielded satisfactory recoveries (90–117%).

Auteur(s) : A. Coly, J.-J. Aaron
Pages : 1745-1750
Année de publication : 2001
Revue : Journal of AOAC International
N° de volume : 84 (6)
Type : Article
Mise en ligne par : COLY Atanasse