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 | Acesso ao texto completo restrito à biblioteca da Embrapa Instrumentação. Para informações adicionais entre em contato com cnpdia.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
05/07/2023 |
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Data da última atualização: |
05/07/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MOREIRA, A. J.; MALAFATTI, J. O. D.; SCIENA, C. R.; PARIS, E. C. |
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Afiliação: |
ELAINE CRISTINA PARIS, CNPDIA. |
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Título: |
Elucidation of the atrazine degradation intermediates and dependence on the physicochemical properties of the niobium pentoxide nanostructures. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Research on Chemical Intermediates, v. 49, 2023. |
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Páginas: |
2855?2874 |
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DOI: |
https://doi.org/10.1007/s11164-023-04989-6 |
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Idioma: |
Inglês |
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Conteúdo: |
Atrazine (ATZ) is a toxic herbicide used globally and has been found with its by products in diferent environmental ecosystems. Due to these by-products toxicity, the scientifc community has endeavored to seek technologies capable of removing them from the aquatic ecosystem, as well as fnding alternatives to unravel the reaction mechanisms. The Nb2O5 semiconductor was obtained in this study by the hydrothermal method aiming at the ATZ degradation under UV light. A volume of 70 mL of 5 mg L?1 ATZ solution containing 10 mg of catalyst, and natural pH achieved 70% photocatalytic degradation of ATZ in 30 min under UV light, which represents an improvement of up to 46% compared to photolysis. After the ATZ degradation, the intermediates were monitored efciently by molecular absorption spectrometry and hydrogen nuclear magnetic resonance (1 H NMR) to reveal the chemical nature of these compounds. Hydroxyatrazine (HAT), Desethylatrazine (DEAT), and/or Desisopropylatrazine (DIAT) were suggested based on the analytical data, allowing to unveil the ATZ photocatalytic degradation mechanism mediated by Nb2O5 under UV light. Therefore, the results present in this study confrm an alternative for ATZ environmental remediation and the molecular absorption spectrometry and 1 H NMR applicability to intermediates identifcation, which is essential to unravel the ATZ degradation mechanisms. |
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Palavras-Chave: |
Aquatic ecosystem; Toxic herbicide. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02082naa a2200205 a 4500
001 2154811
005 2023-07-05
008 2023 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s11164-023-04989-6$2DOI
100 1 $aMOREIRA, A. J.
245 $aElucidation of the atrazine degradation intermediates and dependence on the physicochemical properties of the niobium pentoxide nanostructures.$h[electronic resource]
260 $c2023
300 $a2855?2874
520 $aAtrazine (ATZ) is a toxic herbicide used globally and has been found with its by products in diferent environmental ecosystems. Due to these by-products toxicity, the scientifc community has endeavored to seek technologies capable of removing them from the aquatic ecosystem, as well as fnding alternatives to unravel the reaction mechanisms. The Nb2O5 semiconductor was obtained in this study by the hydrothermal method aiming at the ATZ degradation under UV light. A volume of 70 mL of 5 mg L?1 ATZ solution containing 10 mg of catalyst, and natural pH achieved 70% photocatalytic degradation of ATZ in 30 min under UV light, which represents an improvement of up to 46% compared to photolysis. After the ATZ degradation, the intermediates were monitored efciently by molecular absorption spectrometry and hydrogen nuclear magnetic resonance (1 H NMR) to reveal the chemical nature of these compounds. Hydroxyatrazine (HAT), Desethylatrazine (DEAT), and/or Desisopropylatrazine (DIAT) were suggested based on the analytical data, allowing to unveil the ATZ photocatalytic degradation mechanism mediated by Nb2O5 under UV light. Therefore, the results present in this study confrm an alternative for ATZ environmental remediation and the molecular absorption spectrometry and 1 H NMR applicability to intermediates identifcation, which is essential to unravel the ATZ degradation mechanisms.
653 $aAquatic ecosystem
653 $aToxic herbicide
700 1 $aMALAFATTI, J. O. D.
700 1 $aSCIENA, C. R.
700 1 $aPARIS, E. C.
773 $tResearch on Chemical Intermediates$gv. 49, 2023.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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Biblioteca |
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Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Ocidental. |
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Data corrente: |
02/01/1997 |
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Data da última atualização: |
13/12/2018 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
LIEBEREI, R.; GASPAROTTO, L.; PREISINGER, H.; FELDMANN, F.; IDCZAK, E. |
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Afiliação: |
Institut fur Angewandte Botanik; LUADIR GASPAROTTO, CPAA. |
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Título: |
Recultivation of abandoned monoculture areas in Amazonia. |
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Ano de publicação: |
1993 |
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Fonte/Imprenta: |
In: SHIFT-WORKSHOP, 1., 1993, Belém, PA. Summaries of lectures and posters. S.l.: GKSS, 1993. |
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Páginas: |
p. 123-132. |
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Idioma: |
Inglês |
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Conteúdo: |
The project concerns an experiment in recultivating a fallow rubber plantation of 19 ha by establishing mixed plantations of selected crops, mainly tree. In order to achieve sustainability, different crop combinations and different strategies for management of the spontaneous vegetation will be tested, and the crop systems will be stabilized by inoculation the plants with spores of mycorrhizal fungi. The experimental area was divided into five blocks with eighteen plots each to test four mixed cultivation systems, compared to four conventional monoculture systems. Fallow plots will be analyzed for reference. The scientific research is focused on the ecological role of mycorrhizal fungi in the field trial, analysis of the structural and functional traits of the structural and functional traits of the spontaneous vegetation due to management, and identification and control of plant diseases. In addition, economic and acceptance studies will be conducted to find out whether farmers are willing to apply the tested cultivation systems. In the 19 ha plantation, intend to test the three following ways of stabilizing crops using different variants and to analyze the crop systems on a scale that is close to practical conditions: 1. inoculation of the plants with spores of mycorrhizal fungi; 2. testing of different mixed cultivation systems; and experiment on management of the spontaneous vegetaion in the crop systems to improve the competitive conditions for the planted crops. |
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Palavras-Chave: |
Agrofloresta; Amazonas; Area abandonada; Brasil; Micorrhiza; Multiple croppring; Mycorrizae; Reclamation; Sustainability; Tropical rain forest. |
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Thesagro: |
Cultivo Multiplo; Desenvolvimento Sustentável; Floresta Tropical Úmida; Recuperação do Solo. |
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Thesaurus NAL: |
agroforestry; environmental degradation. |
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Categoria do assunto: |
-- |
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URL: |
https://www.alice.cnptia.embrapa.br/alice/bitstream/doc/667206/1/Id.4709pg123132..pdf
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Marc: |
LEADER 02512nam a2200361 a 4500
001 1667206
005 2018-12-13
008 1993 bl uuuu u00u1 u #d
100 1 $aLIEBEREI, R.
245 $aRecultivation of abandoned monoculture areas in Amazonia.
260 $aIn: SHIFT-WORKSHOP, 1., 1993, Belém, PA. Summaries of lectures and posters. S.l.: GKSS$c1993
300 $ap. 123-132.
520 $aThe project concerns an experiment in recultivating a fallow rubber plantation of 19 ha by establishing mixed plantations of selected crops, mainly tree. In order to achieve sustainability, different crop combinations and different strategies for management of the spontaneous vegetation will be tested, and the crop systems will be stabilized by inoculation the plants with spores of mycorrhizal fungi. The experimental area was divided into five blocks with eighteen plots each to test four mixed cultivation systems, compared to four conventional monoculture systems. Fallow plots will be analyzed for reference. The scientific research is focused on the ecological role of mycorrhizal fungi in the field trial, analysis of the structural and functional traits of the structural and functional traits of the spontaneous vegetation due to management, and identification and control of plant diseases. In addition, economic and acceptance studies will be conducted to find out whether farmers are willing to apply the tested cultivation systems. In the 19 ha plantation, intend to test the three following ways of stabilizing crops using different variants and to analyze the crop systems on a scale that is close to practical conditions: 1. inoculation of the plants with spores of mycorrhizal fungi; 2. testing of different mixed cultivation systems; and experiment on management of the spontaneous vegetaion in the crop systems to improve the competitive conditions for the planted crops.
650 $aagroforestry
650 $aenvironmental degradation
650 $aCultivo Multiplo
650 $aDesenvolvimento Sustentável
650 $aFloresta Tropical Úmida
650 $aRecuperação do Solo
653 $aAgrofloresta
653 $aAmazonas
653 $aArea abandonada
653 $aBrasil
653 $aMicorrhiza
653 $aMultiple croppring
653 $aMycorrizae
653 $aReclamation
653 $aSustainability
653 $aTropical rain forest
700 1 $aGASPAROTTO, L.
700 1 $aPREISINGER, H.
700 1 $aFELDMANN, F.
700 1 $aIDCZAK, E.
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