Determination of Carbamates and Thiocarbamates in Water, Soil and Sediment of the Formoso River, TO, Brazil

• Published in: Chemistry & biodiversity 2020-04, Vol.17 (4), p.e1900717-n/a
• Main Authors: Guarda, Patricia M., Pontes, Antonina M. S., S. Domiciano, Raquel, S. Gualberto, Larissa, B. Mendes, Danylo, A. Guarda, Emerson, Silva, José E. C.
• Format: Article
• Language: English
• Subjects: Agricultural production; Biodiversity; Brazil; Carbamate pesticides; Carbamates (tradename); Carbamates - analysis; Carbamates - isolation & purification; Chromatography, High Pressure Liquid; environmental compartments; Fluvial sediments; Formoso river; Geologic Sediments - chemistry; Groundwater; Groundwater pollution; Insecticides; Pesticides; Pesticides - analysis; Pesticides - chemistry; River banks; Rivers; Rivers - chemistry; Savannahs; Sediment samplers; Soil contamination; Soil Pollutants - analysis; Soil Pollutants - chemistry; Soil Pollutants - isolation & purification; Soil water; Soils; Solid Phase Extraction; Tandem Mass Spectrometry; Thiocarbamates; Thiocarbamates - analysis; Thiocarbamates - isolation & purification; Tocantins; Toxicity; Water Pollutants, Chemical - analysis; Water Pollutants, Chemical - chemistry; Water Pollutants, Chemical - isolation & purification
• ISSN: 1612-1872; 1612-1880
• DOI: 10.1002/cbdv.201900717

Considering the increase in agricultural production in Brazil, the use of pesticides for this production, and that there are no studies on pesticides in the region, the presence of carbamates and thiocarbamates was investigated in different environmental compartments of the Formoso River, TO, Brazil, by UHPLC/MS/MS. The collections were made on the banks of this river, in the area of influence of the agricultural project. The active principles were not found in the soil and sediment samples, only the propoxur principle was found in the water, reaching values of up to 0.025 μg L−1. It was found that the biodiversity of the Tocantinense savannah is under threat, because even though only one of the substances surveyed, propoxur and its derivatives, has been detected, they are substances of high toxicity and tendency to contaminate surface and groundwater to varying degrees and irreversible damage to different species.