Indiscriminate use of glyphosate impregnates river epilithic biofilms in southern Brazil
Uložené v:
| Názov: | Indiscriminate use of glyphosate impregnates river epilithic biofilms in southern Brazil |
|---|---|
| Autori: | Fernandes, Gracieli, Aparicio, Virginia Carolina, Bastos, Marília Camotti, de Gerónimo, Eduardo, Labanowski, Jérôme, Prestes, Osmar Damian, Zanella, Renato, dos Santos, Danilo Rheinheimer, D. R. |
| Prispievatelia: | Soil Department, Universidade Federal de Santa Maria = Federal University of Santa Maria Santa Maria, RS, Brazil (UFSM), Instituto Nacional de Tecnología Agropecuaria (INTA), IUT de Thionville-Yutz, Université de Lorraine (UL), Institut de chimie des milieux et matériaux de Poitiers UMR 7285 (IC2MP Poitiers ), Université de Poitiers = University of Poitiers (UP)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS) |
| Zdroj: | ISSN: 0048-9697. |
| Informácie o vydavateľovi: | CCSD Elsevier |
| Rok vydania: | 2019 |
| Zbierka: | Université de Poitiers: Publications de nos chercheurs.ses (HAL) |
| Predmety: | MESH: Bacteria / metabolism, MESH: Biofilms / drug effects, MESH: Rivers / microbiology, MESH: Tetrazoles / metabolism, MESH: Water Pollutants, Chemical / metabolism, MESH: Brazil, MESH: Environmental Monitoring, MESH: Glycine / analogs & derivatives, MESH: Glycine / metabolism, MESH: Glyphosate, MESH: Herbicides / metabolism, MESH: Isoxazoles / metabolism, MESH: Rivers / chemistry, [SDE.ES]Environmental Sciences/Environment and Society |
| Popis: | International audience ; Epilithic biofilms are communities of microorganisms composed mainly of microbial cells, extracellular polymeric substances from the metabolism of microorganisms, and inorganic materials. Biofilms are a useful tool to assess the impact of anthropic action on aquatic environments including the presence of pesticide residues such as glyphosate. The present work seeks to monitor the occurrence of glyphosate and AMPA residues in epilithic biofilms occurring in a watershed. For this, epilithic biofilm samples were collected in the Guaporé River watershed in the fall and spring seasons of 2016 at eight points. Physicochemical properties of the water and biofilms were determined. The determination of glyphosate and AMPA was performed using an ultra-high performance liquid chromatograph coupled to a tandem mass spectrometer. The concentrations of glyphosate and AMPA detected in epilithic biofilms vary with the season (from 90 to 305μg kg −1 for glyphosate and from 50 to 240μg kg −1 for AMPA, in fall and spring, respectively) and are strongly influenced by the amount of herbicide applications. Protected locations and those with poor access not demonstrate the presence of these contaminants. In the other seven points of the Guaporé River watershed, glyphosate was detected in concentrations ranging from 10 to 305μg kg −1 , and concentrations of AMPA ranged from 50 to 670μg kg −1 . An overview of the contamination in the Guaporé watershed shows that the most affected areas are located in the Marau sub-watershed, which are strongly influenced by the presence of the city of Marau. This confirms the indiscriminate use of glyphosate in the urban area (weed control, domestic gardens and horticulture) and constitutes a problem for human and animal health. The results showed that biofilms can accumulate glyphosate resulting from the contamination of water courses and are sensitive to the sources of pollution and pesticides present in rivers. |
| Druh dokumentu: | article in journal/newspaper |
| Jazyk: | English |
| Relation: | info:eu-repo/semantics/altIdentifier/pmid/30360269; PUBMED: 30360269 |
| DOI: | 10.1016/j.scitotenv.2018.09.292 |
| Dostupnosť: | https://hal.science/hal-02381797 https://hal.science/hal-02381797v1/document https://hal.science/hal-02381797v1/file/CONICET_Digital_Nro.950b3ce4-509f-46cc-b1c5-f626d5ccd4b1_A.pdf https://doi.org/10.1016/j.scitotenv.2018.09.292 |
| Rights: | info:eu-repo/semantics/OpenAccess |
| Prístupové číslo: | edsbas.DD80B514 |
| Databáza: | BASE |
Nájsť tento článok vo Web of Science | Abstrakt: | International audience ; Epilithic biofilms are communities of microorganisms composed mainly of microbial cells, extracellular polymeric substances from the metabolism of microorganisms, and inorganic materials. Biofilms are a useful tool to assess the impact of anthropic action on aquatic environments including the presence of pesticide residues such as glyphosate. The present work seeks to monitor the occurrence of glyphosate and AMPA residues in epilithic biofilms occurring in a watershed. For this, epilithic biofilm samples were collected in the Guaporé River watershed in the fall and spring seasons of 2016 at eight points. Physicochemical properties of the water and biofilms were determined. The determination of glyphosate and AMPA was performed using an ultra-high performance liquid chromatograph coupled to a tandem mass spectrometer. The concentrations of glyphosate and AMPA detected in epilithic biofilms vary with the season (from 90 to 305μg kg −1 for glyphosate and from 50 to 240μg kg −1 for AMPA, in fall and spring, respectively) and are strongly influenced by the amount of herbicide applications. Protected locations and those with poor access not demonstrate the presence of these contaminants. In the other seven points of the Guaporé River watershed, glyphosate was detected in concentrations ranging from 10 to 305μg kg −1 , and concentrations of AMPA ranged from 50 to 670μg kg −1 . An overview of the contamination in the Guaporé watershed shows that the most affected areas are located in the Marau sub-watershed, which are strongly influenced by the presence of the city of Marau. This confirms the indiscriminate use of glyphosate in the urban area (weed control, domestic gardens and horticulture) and constitutes a problem for human and animal health. The results showed that biofilms can accumulate glyphosate resulting from the contamination of water courses and are sensitive to the sources of pollution and pesticides present in rivers. |
|---|---|
| DOI: | 10.1016/j.scitotenv.2018.09.292 |