Degradation of atrazine by Fenton and modified Fenton reactions |
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Authors: | Tomá? Mackul’ak Josef Prousek and L’ubomír ?vorc |
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Institution: | (1) Institute of Chemical and Environmental Engineering, Faculty of Chemical and Food Technology, Slovak University of Technology, 812 37 Bratislava, Slovak Republic;(2) Institute of Analytical Chemistry, Faculty of Chemical and Food Technology, Slovak University of Technology, 812 37 Bratislava, Slovak Republic; |
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Abstract: | Abstract For 50 years, farmers around the world have relied on the herbicide atrazine—one of the triazine family of herbicides—to fight
weeds in corn, grain sorghum, sugar cane, and other crops. Although prohibited in the European Union because of widespread
contamination of waterways and drinking water supplies, it is still one of the most widely used herbicides in the world. Atrazine
and some of its degradation products are among the most commonly found xenobiotics in groundwater and soils in the world.
It is also an endocrine disruptor that causes abnormal reproductive development and immune suppression in wildlife. The purpose
of this study was to identify the degradation products of atrazine. Fenton reaction treatment, a hydroxyl radical oxidation
process recently developed for the degradation of aqueous pesticide waste, was applied to the degradation of atrazine. Classical
and modified Fenton reactions have been used as Advanced Oxidation Process treatment methods. A HPLC method was developed
and optimized for the identification of resulting degradation products. In general, very good atrazine degradation efficiencies
were achieved by both of the methods used. The degradation products, such as oxalic acid, urea, formic acid, acetic acid,
and acetone, were identified by HPLC with a photodiode array detector. |
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