Radiolytic Degradation of the Herbicide Dicamba for Environmental Protection
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Abstract
The radiolytic degradation of the widely used herbicide dicamba (3,6-dichloro-2-methoxybenzoic acid), employing γ irradiation in laboratory batch conditions and with a beam of accelerated electrons in flow-through installation, was investigated. The effects of dose magnitude, ozone or hydrogen peroxide in irradiated solution, and scavengers such as nitrate and hydrogen carbonate on the effectiveness of dicamba decomposition and the products formed were investigated. Changes in the toxicity of irradiated solutions were measured with the Microtox and Spirotox toxicity tests. The application of radiolytic degradation was also examined for decomposition of herbicides in commercial agrochemical preparations.
Keywords
Ozone MCPA Advanced Oxidation Process Dicamba Electron Beam TreatmentNotes
Acknowledgments
This work was supported by the International Atomic Energy Agency, Vienna, Austria (Grant No. POL/00017P).
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