Development of a new automatic on-site detector of pesticides in natural waters by photo induced fluorescence, application to three phenylurea and benzoylurea herbicide

Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
J P BakhoumP Giamarchi

Abstract

Prototypes of on-site automatic photo induced fluorescence detectors of pesticide in natural waters are set up and applied for the determination of the benzoyl- and phenylurea pesticides, namely fluometuron, monolinuron and diflubenzuron. As these pesticides present no native fluorescence the set up system use the photo conversion under UV irradiation of these pesticides into highly fluorescent photoproducts. A first system, called AUTOPIF, (evolution the commercial AQUAPOD system) is develop using a detection via a diode array spectrometer. To improve the sensitivity of the method, a second system, called AUTOPIF+, is developed with a more resolute spectrometer and an intensified CCD camera detection. Analytical applications were carried out in aqueous solution and detected on line with the AUTOPIF and AUTOPIF+ system. The calibration curves are linear over one order of magnitude, and the limits of detection are in the μg mL-1 range. The analytical performances of these methods for the determination of the three pesticides are satisfactory in comparison to other classical PIF methods published for the determination of phenylurea pesticides in aqueous solutions. Our results show that the AUTOPIF and AUTOPIF+ methods are versati...Continue Reading

References

Dec 1, 1990·Ecotoxicology and Environmental Safety·D Freitag, I Scheunert
May 7, 2002·Journal of Chromatography. a·A Muñoz de la PeñaA Bautista-Sánchez
Jun 1, 2005·Luminescence : the Journal of Biological and Chemical Luminescence·Sandrine Irace-GuigandJean Jacques Aaron
Nov 7, 2006·Environmental Research·Mandy WeselakDaniel Krewski
Dec 3, 2013·The Science of the Total Environment·Guodong Ding, Yixiao Bao
Nov 12, 2017·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Moussa MbayePhilippe Giamarchi

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Citations

Dec 17, 2019·Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry·Jean Pierre BakhoumPhilippe Giamarchi
Aug 13, 2020·Environmental Science and Pollution Research International·Jean-Pierre BakhoumPhilippe Giamarchi

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