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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
16/11/2011 |
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Data da última atualização: |
16/11/2011 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
SANTOS, B. C. DOS; FACHIM, D. L.; SOARES, L. H. de B. |
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Afiliação: |
BARBARA C. DOS SANTOS, UFRRJ; DANIELA L. FACHIM, UFRRJ; LUIS HENRIQUE DE BARROS SOARES, CNPAB. |
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Título: |
Análise da produção de fitohormônios por Gluconacetobacter diazotrophicus influenciada pelas condições de operação de um bioreator em batelada. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
SEMANA CIENTÍFICA JOHANNA DÖBEREINER, 11., 2011, Seropédica. Mudanças climáticas, desastres naturais e prevenção de riscos: resumos... Seropédica: Embrapa Agrobiologia, 2011. |
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Páginas: |
64 p. |
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Idioma: |
Português |
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Palavras-Chave: |
Bioprocessos; Fitohormônios. |
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Thesagro: |
Fixação de Nitrogênio. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/46656/1/analise-na-producao-de-fitohormonios.pdf
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Marc: |
LEADER 00734nam a2200169 a 4500
001 1906015
005 2011-11-16
008 2011 bl uuuu u00u1 u #d
100 1 $aSANTOS, B. C. DOS
245 $aAnálise da produção de fitohormônios por Gluconacetobacter diazotrophicus influenciada pelas condições de operação de um bioreator em batelada.$h[electronic resource]
260 $aSEMANA CIENTÍFICA JOHANNA DÖBEREINER, 11., 2011, Seropédica. Mudanças climáticas, desastres naturais e prevenção de riscos: resumos... Seropédica: Embrapa Agrobiologia$c2011
300 $a64 p.
650 $aFixação de Nitrogênio
653 $aBioprocessos
653 $aFitohormônios
700 1 $aFACHIM, D. L.
700 1 $aSOARES, L. H. de B.
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
14/03/2023 |
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Data da última atualização: |
20/03/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
PIRES, N. L.; ARAÚJO, A. P. de; OLIVEIRA FILHO, E. C. de; CALDAS, E. D. |
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Afiliação: |
NAYARA LUIZ PIRES, INSTITUTO FEDERAL DE GOIÁS; ESMERALDA PEREIRA DE ARAÚJO, UNIVERSIDADE DE BRASÍLIA; EDUARDO CYRINO DE OLIVEIRA FILHO, CPAC; ELOISA DUTRA CALDAS, UNIVERSIDADE DE BRASÍLIA. |
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Título: |
An ultrasensitive LC-MS/MS method for the determination of glyphosate, AMPA and glufosinate in water - analysis of surface and groundwater from a hydrographic basin in the Midwestern region of Brazil. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Science of The Total Environment, v. 875, n. 1624991, June 2023. |
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DOI: |
https://doi.org/10.1016/j.scitotenv.2023.162499 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The intensive use of glyphosate around the world in the last few decades demands constant monitoring of this compound and its metabolite in aquatic compartments. This work aimed to develop a sensitive method for the analysis of glyphosate, AMPA and glufosinate in water by liquid chromatography/tandem mass spectrometry (LC-MS/MS). The method involves analyte concentration by lyophilization (20×) and direct injection on the LC-MS/MS, and was satisfactorily validated at a LOQ of 0.0025 μg L−1. A total of 142 samples of surface and groundwater collected during the 2021/2022 dry and rainy seasons in the Rio Preto Hydrographic Basin were analyzed. All the 52 groundwater samples were positive for glyphosate (up to 1.5868 μg L−1, dry season) and AMPA (up to 0.2751 μg L−1, dry season). A total of 27 of the 90 surface water samples were positive for glyphosate (up to 0.0236 μg L−1), and 31 samples for AMPA (up to 0.0086 μg L−1), over 70 % collected during the dry season. Glufosinate was detected in only five samples, four in groundwater (up to 0.0256 μg L−1). The levels found in the samples are much lower than the maximum levels established by the Brazilian legislation for glyphosate and/or AMPA and lower than the most critical toxicological endpoints for aquatic organisms. However, constant monitoring is necessary, demanding sensitive methods to allow the detection of the very low levels of these pesticides in water. MenosAbstract: The intensive use of glyphosate around the world in the last few decades demands constant monitoring of this compound and its metabolite in aquatic compartments. This work aimed to develop a sensitive method for the analysis of glyphosate, AMPA and glufosinate in water by liquid chromatography/tandem mass spectrometry (LC-MS/MS). The method involves analyte concentration by lyophilization (20×) and direct injection on the LC-MS/MS, and was satisfactorily validated at a LOQ of 0.0025 μg L−1. A total of 142 samples of surface and groundwater collected during the 2021/2022 dry and rainy seasons in the Rio Preto Hydrographic Basin were analyzed. All the 52 groundwater samples were positive for glyphosate (up to 1.5868 μg L−1, dry season) and AMPA (up to 0.2751 μg L−1, dry season). A total of 27 of the 90 surface water samples were positive for glyphosate (up to 0.0236 μg L−1), and 31 samples for AMPA (up to 0.0086 μg L−1), over 70 % collected during the dry season. Glufosinate was detected in only five samples, four in groundwater (up to 0.0256 μg L−1). The levels found in the samples are much lower than the maximum levels established by the Brazilian legislation for glyphosate and/or AMPA and lower than the most critical toxicological endpoints for aquatic organisms. However, constant monitoring is necessary, demanding sensiti... Mostrar Tudo |
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Palavras-Chave: |
Glifosato; LC-MS/MS. |
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Thesagro: |
Bacia Hidrográfica; Contaminação; Cromatografia; Ecologia Aquatica; Herbicida; Toxicologia. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/247989/1/1-s2.0-S0048969723011154-main.pdf
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Marc: |
LEADER 02506naa a2200265 a 4500
001 2152364
005 2023-03-20
008 2023 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.scitotenv.2023.162499$2DOI
100 1 $aPIRES, N. L.
245 $aAn ultrasensitive LC-MS/MS method for the determination of glyphosate, AMPA and glufosinate in water - analysis of surface and groundwater from a hydrographic basin in the Midwestern region of Brazil.$h[electronic resource]
260 $c2023
520 $aAbstract: The intensive use of glyphosate around the world in the last few decades demands constant monitoring of this compound and its metabolite in aquatic compartments. This work aimed to develop a sensitive method for the analysis of glyphosate, AMPA and glufosinate in water by liquid chromatography/tandem mass spectrometry (LC-MS/MS). The method involves analyte concentration by lyophilization (20×) and direct injection on the LC-MS/MS, and was satisfactorily validated at a LOQ of 0.0025 μg L−1. A total of 142 samples of surface and groundwater collected during the 2021/2022 dry and rainy seasons in the Rio Preto Hydrographic Basin were analyzed. All the 52 groundwater samples were positive for glyphosate (up to 1.5868 μg L−1, dry season) and AMPA (up to 0.2751 μg L−1, dry season). A total of 27 of the 90 surface water samples were positive for glyphosate (up to 0.0236 μg L−1), and 31 samples for AMPA (up to 0.0086 μg L−1), over 70 % collected during the dry season. Glufosinate was detected in only five samples, four in groundwater (up to 0.0256 μg L−1). The levels found in the samples are much lower than the maximum levels established by the Brazilian legislation for glyphosate and/or AMPA and lower than the most critical toxicological endpoints for aquatic organisms. However, constant monitoring is necessary, demanding sensitive methods to allow the detection of the very low levels of these pesticides in water.
650 $aBacia Hidrográfica
650 $aContaminação
650 $aCromatografia
650 $aEcologia Aquatica
650 $aHerbicida
650 $aToxicologia
653 $aGlifosato
653 $aLC-MS/MS
700 1 $aARAÚJO, A. P. de
700 1 $aOLIVEIRA FILHO, E. C. de
700 1 $aCALDAS, E. D.
773 $tScience of The Total Environment$gv. 875, n. 1624991, June 2023.
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