Surface water contamination from pesticide mixtures and risks to aquatic life in a high-input agricultural region of Brazil
| Autor: | Robson Rolland Monticelli Barizon, Fábio Kummrow, Anjaina Fernandes de Albuquerque, Márcia Regina Assalin, Maria Aparecida Rosa, Debora Renata Cassoli de Souza Dutra, Ricardo Antônio Almeida Pazianotto |
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| Rok vydání: | 2022 |
| Předmět: |
History
Insecticides Environmental Engineering Polymers and Plastics Herbicides Health Toxicology and Mutagenesis Public Health Environmental and Occupational Health Simazine Water General Medicine General Chemistry Pollution Risk Assessment Industrial and Manufacturing Engineering Fungicides Industrial Carbofuran Rivers Tandem Mass Spectrometry Environmental Chemistry Business and International Management Pesticides Brazil Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Chemosphere. 308(Pt 3) |
| ISSN: | 1879-1298 |
| Popis: | The environmental risks of pesticides found in surface waters of an important agricultural basin in Brazil were estimated by adopting two approaches: individual pesticides risk quotients (RQ) and concentration addition model for pesticide mixtures (∑RQs) contained in each water sample. Monitoring was carried out in the Mogi Guaçu River basin, Brazil, from October 2017 to May 2018. Four sampling points were selected in the Mogi Guaçu River and seven in its tributaries A multiresidue method with solid-phase extraction and subsequent analysis by UPLC-ESI-QqQ-MS/MS was developed to quantify 19 pesticides. Herbicides, except for simazine, presented the highest detection frequencies with values above 70%. Tebuthiuron was found in all 55 analyzed samples, presenting the highest concentration (6437 ng L |
| Databáze: | OpenAIRE |
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