Effectiveness evaluation of glyphosate oxidation employing the H2O2/UVC process: Toxicity assays with Vibrio fischeri and Rhinella arenarum tadpoles
- Junges, Celina Maria
- Vidal, Eduardo Gabriel
- Attademo, Andres Maximiliano
- Mariani, Melisa Lourdes
- Cardell, Leandro
- Negro, Antonio Carlos
- Cassano, Alberto Enrique
- Peltzer, Paola
- Lajmanovich, Rafael Carlos
- Zalazar, Cristina Susana
DOIAbstract
The H2O2/UVC process was applied to the photodegradation of a commercial formulation of glyphosate in water. Two organisms (Vibrio fischeri bacteria and Rhinella arenarum tadpoles) were used to investigate the toxicity of glyphosate in samples M1, M2, and M3 following different photodegradation reaction times (120, 240 and 360 min, respectively) that had differing amounts of residual H2O2. Subsamples of M1, M2, and M3 were then used to create samples M1,E, M2,E and M3,E in which the H2O2 had been removed. Acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) activities were measured in tadpoles to determine possible sub-lethal effects. In V. fischeri, M1,E, which was collected early in the photodegradation process, caused 52% inhibit...
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