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A simple and rapid phosphorimetric method for the determination of the fungicide fuberidazole in water samples

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The applicability of heavy-atom induced room-temperature phosphorescence to determine pesticides in real samples is demonstrated in this work. Thus a new, simple, rapid and selective phosphorimetric method for fuberidazole determination is proposed. The phosphorescence signals are a consequence of intermolecular protection when analytes are found exclusively in the presence of heavy atom salts and sodium sulphite when used as an oxygen scavenger to minimize RTP quenching, so protective media (such as cyclodextrines, micellar media, etc) are not necessary to use for obtaining phosphorescence in solution. The determination was performed in 0.4?M?KI and 8?mM sodium sulphite at a measurement temperature of 20°C. The phosphorescence intensity was measured at 515?nm exciting at 308?nm. Phosphorescence was easily and rapidly obtained, showing a linear concentration range between 0 and 25?ng?mL -1 with a detection limit of 95?ng?L -1 . The method has been successfully applied to the analysis of fuberidazole in water.
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Keywords: Fuberidazole; Heavy atom induced; Pesticide analysis; Room temperature phosphorescence; Water

Document Type: Research Article

Affiliations: 1: Department of Analytical Chemistry, Faculty of Sciences, University of Granada, C/Fuentenueva s/n, 18071 Granada, Spain 2: Centre for Chemical Sensors, Swiss Federal Institute of Technology Zurich (ETHZ), Technoparkstrasse 1, CH-8005 Zürich, Switzerland

Publication date: June 15, 2005

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