Data/hora: 17/06/2024 19:24:38

Biblioteca(s): | Embrapa Meio Ambiente.
Data corrente: | 05/12/2019
Data da última atualização: | 05/12/2019
Autoria: | BARIZON, R. R. M.; FIGUEIREDO, R. de O.; SOUZA, D. R. C. de; REGITANO, J. B.; FERRACINI, V. L.
Afiliação: | ROBSON ROLLAND MONTICELLI BARIZON, CNPMA; RICARDO DE OLIVEIRA FIGUEIREDO, CNPMA; DEBORA RENATA CASSOLI DE S DUTRA, CNPMA; JUSSARA BORGES REGITANO, ESALQ-USP; VERA LUCIA FERRACINI, CNPMA.
Título: | Pesticides in the surface waters of the Camanducaia River watershed, Brazil.
Ano de publicação: | 2019
Fonte/Imprenta: | Journal of Environmental Science and Health, Part B, New York, p. 1-10, 2019.
ISSN: | 1532-4109
DOI: | https://doi.org/10.1080/03601234.2019.1693835
Idioma: | Inglês
Conteúdo: | Abstract: Camanducaia River is part of the Piracicaba watershed responsible for pumping water into the Cantareira System, which is one of the main water sources for the metropolis of São Paulo and Campinas, Brazil. Intensive use of pesticides and hilly topography represents a situation of high risk for river water contamination. Therefore, water samples from 12 locations were collected along the Camanducaia River and its tributaries, over a period of 4 mo during the rainy season, and analyzed by GC-MS/MS or UPLC- MS/MS for the presence of 46 pesticides. Seven pesticides (fipronil, methyl parathion, metolachlor, atrazine, carbofuran, diuron, and simazine) were positively detected. Only atrazine (the most frequently detected) and diuron were present at concentrations above the limit of quantification of the analytical method (0.32 and 0.57 lg L 1 for atrazine and diuron, respectively). Pesticides detection frequency was higher than expected for a river system where only 11.8% of the land area is under agriculture. The vulnerability of the Camanducaia basin to pesticide contamination is attributed to the high annual precipitation (> 1.5 m y 1 in the headwaters), associated with topographical features (steep terrain) and soil types that favor surface runoff, which has been exacerbated by poor soil management practices.
Palavras-Chave: | Fluvial water.
Thesagro: | Agrotóxico; Bacia Hidrográfica; Poluição da Água; Resíduo Quimico.
Thesaurus Nal: | Agrochemicals; Environmental monitoring; Gas chromatography-mass spectrometry; Pesticide residues; Pesticides; Watersheds.
Categoria do assunto: | W Química e Física
Registro original: | Embrapa Meio Ambiente (CNPMA)
Exemplares: | CNPMA - (16568-1) - UPC - AP - DD -  -  -  - DIS