title: Simultaneous determination of binary mixtures of sulfonylurea herbicides in water by first-derivative photochemically induced spectrofluorimetry.
abstract: 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%).
authors.affiliation: Institut de Topologie et de Dynamique des Systèmes de l'Université Denis-DIDEROT-Paris 7, Laboratoire Associé au CNRS, Paris, France.
authors.forename: A
authors.initials: A
authors.lastname: Coly
authors.forename: J J
authors.initials: JJ
authors.lastname: Aaron
mesh_terms: D001190:Arylsulfonates / Q000032:analysis; D006540:Herbicides / Q000032:analysis*; D010777:Photochemistry; D011725:Pyridines / Q000032:analysis; D013050:Spectrometry, Fluorescence / Q000379:methods*; D013449:Sulfonamides / Q000032:analysis; D013453:Sulfonylurea Compounds / Q000032:analysis; D014227:Triazines / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D001190:Arylsulfonates; D006540:Herbicides; D011725:Pyridines; D013449:Sulfonamides; D013453:Sulfonylurea Compounds; D014227:Triazines; D014874:Water Pollutants, Chemical; C447879:rimsulfuron; C050296:metsulfuron methyl; C042031:sulfometuron methyl; C037137:chlorsulfuron