Direct and indirect photodegradation of atrazine and <i>S</i> -metolachlor in agriculturally impacted surface water and associated C and N isotope fractionation
Guillaume Drouin, Boris Droz, Frank Leresche, Sylvain Payraudeau, Jérémy Masbou, Gwenaël Imfeld
Abstract
-metolachlor, respectively. In contrast, photodegradation under simulated sunlight led to negligible C and slight N isotope fractionation, emphasizing the effect of the radiation wavelengths on the isotope fractionation induced by direct photodegradation. Altogether, these results highlight the importance of using simulated sunlight to obtain environmentally-relevant isotopic fractionation values and to distinguish photodegradation and other dissipation pathways in surface waters.
Topics & Concepts
PhotodegradationFractionationIsotope fractionationAtrazineChemistryEnvironmental chemistryMetolachlorRadicalPesticideChromatographyOrganic chemistryPhotocatalysisCatalysisEcologyBiologyMarine and coastal ecosystemsPesticide and Herbicide Environmental StudiesPharmaceutical and Antibiotic Environmental Impacts