Removal of diuron and hexazinone from guarany aquifer groundwater

The economy of many communities in southeastern Brazil is based on agroindustry, particularly the sugarcane industry. Recent studies have found increased use of herbicides in this type of agriculture, among which diuron and hexazinone are the most widely used. The water supply for some communities is derived entirely from the Guarany Aquifer (the world's largest transborder underground freshwater system), and some wells are located in recharge zones, which makes the groundwater more vulnerable to contamination. In this study, we monitored some of the wells located in the recharge area. We stud...