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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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| Registros recuperados : 211 | |
| 3. |  | CASTRO, V. L. S. S. de. Avaliacao ecotoxicologica de agrotoxicos e biopesticidas. In: CONGRESSO BRASILEIRO DE TOXICOLOGIA, 9., 1995, Ribeirao Preto, SP. Revista Brasileira de Toxicologia, Ribeirao Preto, Sao Paulo, v.8, n.1, p.12, 1995. Resumo. ref.1.6.4| Biblioteca(s): Embrapa Meio Ambiente. |
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| 12. | | CASTRO, V. L. S. S. de. Biotecnologia, OGM e ambiente. In: HAMMES, V. S. [Ed.]. Julgar - Percepção do impacto ambiental. São Paulo: Globo, 2004. p. 137-145. (Educação Ambiental para o Desenvolvimento Sustentável, v. 3).| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 13. | | CASTRO, V. L. S. S. de. Agrotóxicos e seus efeitos na saúde. In: HAMMES, V. S. (Ed.). Julgar: percepção do impacto ambiental. 3. ed. rev. e ampl. Brasília, DF: Embrapa, 2012. v. 4, pt. 2, p. 159-170. (Educação Ambiental para o Desenvolvimento Sustentável, v. 4).| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 15. | | CASTRO, V. L. S. S. de. Endocrine disruptors. In: JORGENSEN, S. E. (Ed.). Encyclopedia of environmental management. New York: Taylor and Francis, 2013. v. 1, p. 643-655.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 18. | | CASTRO; V. L. S. S. de. Protocolo de avaliacao toxico-patologica. In: DE NARDO; E.A.B.; CAPALBO, D.M.F.; OLIVEIRA, M.C.B.; MORAES, G.J. de., eds. Analise de risco e avaliacao do impacto ambiental decorrente do uso de agentes de controle biologico: memoria do workshop. Jaguariuna: EMBRAPA-CNPMA, 1995. p.41-43 (EMBRAPA-CNPMA. Documentos).| Biblioteca(s): Embrapa Meio Ambiente. |
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| Registros recuperados : 211 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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