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Laser–Induced Fluorescence Detection of Carbamates Traces in Water

Abstract : The absorption and fluorescence spectra of carbaryl (CB), carbofuran (CF) and carbendazim (MBC) have been studied. Fluorescence lifetime and fluorescence quantum yields are also reported as well as the influence of pH, solvent and presence of humic acids on fluorescence. The limit of detection (LD) of the three compounds has been measured by direct analysis by laser-induced fluorescence (LIF) using a pulsed YAG laser with an Optical Parametric Oscillator (OPO) as excitation source and an Intensified Charged Coupled Device (ICCD) camera for the fluorescence detection. Instrumental LD found for CB, for MBC and for CF are respectively 4, 50 and 1000 ng L(-1). In tap water, the LD obtained is 800 ng L(-1) for MBC and 20,000 ng L(-1) for CF. For CB, the use of a time shift between excitation and emission allows to reach a LD of 20 ng L(-1) in tap water.
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Submitted on : Wednesday, September 6, 2017 - 1:05:35 PM
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Laure Burel-Deschamps, Philippe Giamarchi, Ludovic Stephan, Yves Lijour, Alain Le Bihan. Laser–Induced Fluorescence Detection of Carbamates Traces in Water. Journal of Fluorescence, 2006, 16 (2), pp.177 - 183. ⟨10.1007/s10895-005-0044-x⟩. ⟨hal-01582669⟩



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