Pesticide residues in the Formoso River: a threat to biodiversity in the Cerrado of the Tocantins State, Brazil

Cerrado biodiversity has been threatened by the increase in agricultural production state of Tocantins and use pesticides. This work was carried out Formoso do Araguaia region, on banks River, which is home to about 1,825 indigenous people one largest lands Tocantins, Brazil. The presence pesticides imidazolinone strobirulin classes verified, analyzed UHPLC-MS/MS from April 2018 February 2019, assess impacts these study site. After analyses, five active principles (azoxystrobin, phenamidone, imazethapyr, tricyclazole trifloxystrobin) were detected water matrix, two (azoxystrobin tricyclazole) soil but no principle sediment matrix. Contamination where riverine this for cultivation, hygiene food, worrying, are exposed substances.