title: Fluorescence determination of the pesticide asulam by flow injection analysis.
abstract: This paper presents the analytical determination of the pesticide Asulam based on its native fluorescence. The method was optimized in either a flow injection analysis (FIA) assembly or in batch. The maximum fluorescence intensity was observed for basic pH solutions and at a lamda(ex) of 258 nm and a lamda(em) of 342 nm. The influence of different empirical parameters, such as the pH, the presence of surfactants, solvent polarity or solved oxygen amount, was studied. The calibration range was fitted with a linear equation from 0.01-3 mg l(-1) Asulam and 0.005-15 mg l(-1) Asulam for batch and continuous-flow, respectively. The RSD for both procedures was 1.0%. After testing the influence of a large series of potential interferents, the method was applied to water samples from different locations.
authors.affiliation: Department of Analytical Chemistry, Universidad de Valencia, Valencia, Spain.
authors.forename: I
authors.initials: I
authors.lastname: Súbová
authors.forename: A
authors.initials: A
authors.lastname: Khenlami Assandas
authors.forename: M
authors.initials: M
authors.lastname: Catalá Icardo
authors.forename: J
authors.initials: J
authors.lastname: Martínez Calatayud
mesh_terms: D002219:Carbamates / Q000032:analysis*; D017022:Flow Injection Analysis / Q000379:methods; D005618:Fresh Water / Q000032:analysis; D006540:Herbicides / Q000032:analysis*; D006863:Hydrogen-Ion Concentration; D015394:Molecular Structure; D010573:Pesticide Residues / Q000032:analysis*; D012680:Sensitivity and Specificity; D013050:Spectrometry, Fluorescence / Q000379:methods
chemical_list: D002219:Carbamates; D006540:Herbicides; D010573:Pesticide Residues; C010036:asulam