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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
08/02/2018 |
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Data da última atualização: |
08/02/2018 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
CASTRO, V. L. S. S. de. |
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Afiliação: |
VERA LUCIA SCHERHOLZ S DE CASTRO, CNPMA. |
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Título: |
Environmental influence on nanoecotoxicity of carbon nanomaterials and nanoparticles. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
IN: BRAZILIAN MRS MEETING, 16., 2017, Gramado. Proceedings... Gramado: Sociedade Brasileira de Pesquisa em Materiais, 2017. Ref. Q.OR3.9. p. 72. |
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Idioma: |
Inglês |
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Conteúdo: |
Nanotechnology compounds may pose a risk to the environment due to their specific properties and to the potential widespread use. Despite a considerable amount of studies, knowledge gaps between nanotoxicological research and nanomaterial (NM) safety remain large. Of particular interest is the aquatic environment which tend to be the ultimate sink for contaminants. Once in the aquatic environment, NM are highly affected by theirsurroundings like the presence of natural organic material (NOM) and the influence of UV irradiation, among others.Given the possibility of long-term exposure of NM, the specific methodology for nanotoxicology analysis need development.Thus, it becomes important to apply a battery of bioassays in the evaluation of their potential hazard taking into account these factors. More than that, NM realistic environmental concentration may be affectedunder environmental influence on its fate and transport. For example, NOM significantly improved the stability of graphene oxide (GO) in water.Also, nano-TiO2 photocatalytic properties can result in enhanced toxicity effects.In the same way,GO photoreacts under simulated sunlight.Recently, our study showed thatthe presence of NOM changed GO toxic effects on aquatic organisms.In order to define the environmental risks and identify new tests directions, it is important to understand these issues. Thereafter, bioassays may be performed in different organisms exposed in different experimental conditions. For that, various biological endpoints may be investigated as survival rates, malformation, hatching and biochemical biomarkers. Accordingly, the improved understanding of matrix interactions will help stakeholders in performing nanomaterials relevant risk management. MenosNanotechnology compounds may pose a risk to the environment due to their specific properties and to the potential widespread use. Despite a considerable amount of studies, knowledge gaps between nanotoxicological research and nanomaterial (NM) safety remain large. Of particular interest is the aquatic environment which tend to be the ultimate sink for contaminants. Once in the aquatic environment, NM are highly affected by theirsurroundings like the presence of natural organic material (NOM) and the influence of UV irradiation, among others.Given the possibility of long-term exposure of NM, the specific methodology for nanotoxicology analysis need development.Thus, it becomes important to apply a battery of bioassays in the evaluation of their potential hazard taking into account these factors. More than that, NM realistic environmental concentration may be affectedunder environmental influence on its fate and transport. For example, NOM significantly improved the stability of graphene oxide (GO) in water.Also, nano-TiO2 photocatalytic properties can result in enhanced toxicity effects.In the same way,GO photoreacts under simulated sunlight.Recently, our study showed thatthe presence of NOM changed GO toxic effects on aquatic organisms.In order to define the environmental risks and identify new tests directions, it is important to understand these issues. Thereafter, bioassays may be performed in different organisms exposed in different experimental conditions. For that, var... Mostrar Tudo |
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Palavras-Chave: |
Ectoxicology; Nanoecotoxicity. |
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Categoria do assunto: |
W Química e Física |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/172374/1/RA-CastroVLSS-16BrazilMRSMeeting-2017-p72.pdf
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Marc: |
LEADER 02285nam a2200133 a 4500
001 2087404
005 2018-02-08
008 2017 bl uuuu u00u1 u #d
100 1 $aCASTRO, V. L. S. S. de
245 $aEnvironmental influence on nanoecotoxicity of carbon nanomaterials and nanoparticles.$h[electronic resource]
260 $aIN: BRAZILIAN MRS MEETING, 16., 2017, Gramado. Proceedings... Gramado: Sociedade Brasileira de Pesquisa em Materiais, 2017. Ref. Q.OR3.9. p. 72.$c2017
520 $aNanotechnology compounds may pose a risk to the environment due to their specific properties and to the potential widespread use. Despite a considerable amount of studies, knowledge gaps between nanotoxicological research and nanomaterial (NM) safety remain large. Of particular interest is the aquatic environment which tend to be the ultimate sink for contaminants. Once in the aquatic environment, NM are highly affected by theirsurroundings like the presence of natural organic material (NOM) and the influence of UV irradiation, among others.Given the possibility of long-term exposure of NM, the specific methodology for nanotoxicology analysis need development.Thus, it becomes important to apply a battery of bioassays in the evaluation of their potential hazard taking into account these factors. More than that, NM realistic environmental concentration may be affectedunder environmental influence on its fate and transport. For example, NOM significantly improved the stability of graphene oxide (GO) in water.Also, nano-TiO2 photocatalytic properties can result in enhanced toxicity effects.In the same way,GO photoreacts under simulated sunlight.Recently, our study showed thatthe presence of NOM changed GO toxic effects on aquatic organisms.In order to define the environmental risks and identify new tests directions, it is important to understand these issues. Thereafter, bioassays may be performed in different organisms exposed in different experimental conditions. For that, various biological endpoints may be investigated as survival rates, malformation, hatching and biochemical biomarkers. Accordingly, the improved understanding of matrix interactions will help stakeholders in performing nanomaterials relevant risk management.
653 $aEctoxicology
653 $aNanoecotoxicity
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Agrobiologia; Embrapa Cocais. |
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Data corrente: |
20/12/2016 |
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Data da última atualização: |
24/02/2017 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
SOUSA, A. M. B. de; ARAUJO, J. L. S. de; LIMA, M. A. de; FREITAS, A. C. R. de; URQUIAGA, S.; ALVES, B. J. R. |
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Afiliação: |
AUREA MARIA BARBOSA DE SOUSA, UFRRJ; JEAN LUIZ SIMOES DE ARAUJO, CNPAB; MAGDA APARECIDA DE LIMA, CNPMA; ANTONIO CARLOS REIS DE FREITAS, CPACP; SEGUNDO SACRAMENTO U CABALLERO, CNPAB; BRUNO JOSE RODRIGUES ALVES, CNPAB. |
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Título: |
Efeito do nitrogênio na população de metanogênicas e emissões de metano, em diferentes cultivares de arroz irrigado. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
In: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 32.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 16.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 14.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 11., FERTBIO 2016. Goiânia. Rumo aos novos desafios: anais. Goiânia: UFG, 2016. |
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Idioma: |
Português |
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Conteúdo: |
Este trabalho avaliou a população de metanogênicas (gene mcrA), em função da adubação com N, sob cultivo de diferentes cultivares de arroz. |
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Palavras-Chave: |
Metanogênese; QPCR. |
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Thesagro: |
Nitrogênio. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/156695/1/efeito-do-nitrogenio.pdf
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Marc: |
LEADER 01012nam a2200205 a 4500
001 2065554
005 2017-02-24
008 2016 bl uuuu u00u1 u #d
100 1 $aSOUSA, A. M. B. de
245 $aEfeito do nitrogênio na população de metanogênicas e emissões de metano, em diferentes cultivares de arroz irrigado.
260 $aIn: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 32.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 16.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 14.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 11., FERTBIO 2016. Goiânia. Rumo aos novos desafios: anais. Goiânia: UFG$c2016
520 $aEste trabalho avaliou a população de metanogênicas (gene mcrA), em função da adubação com N, sob cultivo de diferentes cultivares de arroz.
650 $aNitrogênio
653 $aMetanogênese
653 $aQPCR
700 1 $aARAUJO, J. L. S. de
700 1 $aLIMA, M. A. de
700 1 $aFREITAS, A. C. R. de
700 1 $aURQUIAGA, S.
700 1 $aALVES, B. J. R.
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Embrapa Cocais (CPACP) |
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