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| Registros recuperados : 237 | |
| 204. |  | COA, F.; CLEMENTE, Z.; LOPES, J. R.; RODRIGUES NETO, L. L.; CASTRO, V. L. S. S. de; ALVES, O. L.; BARBIERI, E.; MARTINEZ, D. S. T. Nanotubos de carbono modificados com ácido húmico: preparação, caracterização e toxicidade em embriões de zebrafish. In: CONGRESSO BRASILEIRO DE ECOTOXICOLOGIA, 14., 2016, Curitiba. Anais.... Curitiba: Sociedade Brasileira de Ecotoxicologia. p. 887-888.| Biblioteca(s): Embrapa Meio Ambiente. |
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| 205. | | CASTRO, V. L. S. S. de; MELLO, M. A. de; DINIZ, C. A. R.; MORITA, L. H. M.; ZUCCHI, T.; POLI, P. Neurodevelopmental effects of perinatal fenarimol exposure on rats. Reproductive Toxicology, Elmsford, v. 23, n. 1, p. 98-105, 2007.| Biblioteca(s): Embrapa Meio Ambiente. |
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| 206. | | PEREIRA, F. F.; FERREIRA, M. D.; JONSSON, C. M.; JESUS, K. R. de; CASTRO, V. L. S. de; CORREA, D. S. Toxicity of engineered nanostructures in aquatic environments. In: KUMAR,V.; GULERIA, P.; RANJAN, S.; DASGUPTA, N.; LICHTFOUSE, E. (ed.). Nanotoxicology and Nanoecotoxicology, v. 1, 2021. 171 - 202| Biblioteca(s): Embrapa Instrumentação. |
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| 207. | | SILVA, G. H. da; CLEMENTE, Z.; COA, F.; RODRIGUES NETO, L. L.; CASTRO, V. L. S. S. de; MARTINEZ, D. S. T.; MONTEIRO, R. T. R. TiO2-carbon nanotubes nanohybrid toxicity in Danio rerio embryo. Toxicology Letters, v. 280, Supplement 1, p. S210-S211, 2017. Abstracts of the 53rd Congress of the European Societies of Toxicology (EUROTOX), Bratislava, Slovakia, 2017.| Biblioteca(s): Embrapa Meio Ambiente. |
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| 208. | | SILVA, G. H. da; FRANQUI, L. S.; FARIAS, M. A. de; CASTRO, V. L. S. S. de; BYRNE, H. J.; MARTINEZ, D. S.; MONTEIRO, R. T.; CASEY, A. TiO2-MWCNT nanohybrid: Cytotoxicity, protein corona formation and cellular internalisation in RTG-2 fish cell line Aquatic Toxicology, v.257, article106434, 2023.| Biblioteca(s): Embrapa Meio Ambiente. |
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| 209. | | JESUS-HITZSCHKY, K. R. E. de; ASSIS, O. B. G. de; CARNIEL, B. F.; MASSINI, K. C.; CASTRO, V. L. S. S. de; FRAISOLI, C.; VALOIS, M. Uma proposta metodológica para avaliação caso-a-caso dos impactos das nanotecnologias: método "Impactos-Nanotec". In: SEMINÁRIO INTERNACIONAL DE NANOTECNOLOGIA, SOCIEDADE E MEIO AMBIENTE, 7., 2010, Rio de Janeiro. Resumos... Rio de Janeiro: FIOCRUZ, 2010.| Biblioteca(s): Embrapa Meio Ambiente. |
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| 210. | | MARIGO, A. L. S.; SILVA, M. S. G. M. e; JONSSON, C. M.; CASTRO, V. L. S. S. de; CARVALHO, N. C. Uso de díptera como bioindicadora em estudos ecotoxicológicos com nanopartículas. In: ENCONTRO NACIONAL SOBRE METODOLOGIAS E GESTÃO DE LABORATÓRIOS DA EMBRAPA, 19.; SIMPÓSIO SOBRE PROCEDIMENTOS ANALÍTICOS E A RASTREABILIDADE DOS RESULTADOS DA AGROPECUÁRIA, 6., 2014, Fortaleza. Unir talentos para ultrapassar fronteiras. Anais... Fortaleza: Embrapa Agroindústria Tropical, 2014. p. 33.| Biblioteca(s): Embrapa Meio Ambiente. |
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| 212. | | CASTRO, V. L. S. S. de; JONSSON, C. M.; SILVA, M. S. G. M. e; CASTANHA, R. F.; VALLIM, J. H.; SILVA, L. A. G. da; OLIVEIRA, R. M. D. de; CORREA, D. S.; FERREIRA, M. D. Estimates of AgNP toxicity thresholds in support of environmental safety policies. Journal of Nanoparticle Research, v. 24, n. 1, article 24, 2022.| Biblioteca(s): Embrapa Instrumentação; Embrapa Meio Ambiente. |
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| 213. | | LUIS, A. I. S.; CAMPOS, E. V. R.; OLIVEIRA, J. L. de; VALLIM, J. H.; PROENÇA, P. L. de F.; CASTANHA, R. F.; CASTRO, V. L. S. S. de; FRACETO, L. F. Ecotoxicity evaluation of polymeric nanoparticles loaded with ascorbic acid for fish nutrition in aquaculture. Journal of Nanobiotechnology, v. 19, n. 1, article 163, 2021. p. 1-22.| Biblioteca(s): Embrapa Meio Ambiente. |
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| 214. | | CASTANHA, R. F.; PEREIRA, A. do E. S.; VILLARREAL, G. P. U.; VALLIM, J. H.; PERTRINI, F. S.; JONSSON, C. M.; FRACETO, L. F.; CASTRO, V. L. S. S. de. Ecotoxicity studies of two atrazine nanoformulations: from the evaluation of stability in media to the effects on aquatic organisms. Environmental Pollution, v. 335, p. 122235, 2023.| Biblioteca(s): Embrapa Meio Ambiente. |
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| 215. | | VALLIM, J. H.; CLEMENTE, Z.; CASTANHA, R. F.; PEREIRA, A. do E. S.; CAMPOS, E. V. R.; ASSALIN, M. R.; MAURER-MORELLI, C. V.; FRACETO, L. F.; CASTRO, V. L. S. S. de. Chitosan nanoparticles containing the insecticide dimethoate: a new approach in the reduction of harmful ecotoxicological effects. NanoImpact, v. 27, article 100408, 2022.| Biblioteca(s): Embrapa Meio Ambiente. |
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| 216. | | CÔA, F.; STRAUSS, M.; CLEMENTE, Z.; RODRIGUES NETO, L. L.; LOPES, J. R.; ALENCAR, R. S.; SOUZA FILHO, A. G.; ALVES, O. L.; CASTRO, V. L. S. S. de; BARBIERI, E.; MARTINEZ, D. S. T. Coating carbon nanotubes with humic acid using an eco-friendly mechanochemical method: Application for Cu(II) ions removal from water and aquatic ecotoxicity. Science of the Total Environment, v. 607-608, p. 1479-1486, 2017.| Biblioteca(s): Embrapa Meio Ambiente. |
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| 217. | | DURÁN, N.; MARTINEZ, D. S. T.; JUSTO, G. Z.; LIMA, R.; CASTRO, V. L. S. S. de; UMBUZEIRO, G. A.; BARBIERI, E.; DURÁN, M.; MELO, P. S.; ALVES, O. L. Interlab study on nanotoxicology of representative graphene oxide. In: INTERNATIONAL CONFERENCE ON SAFE PRODUCTION AND USE OF NANOMATERIALS, 4, 2014, Grenoble. Book of Abstract... Grenoble: Plate-Forme Nano Sécurité, 2014.| Biblioteca(s): Embrapa Meio Ambiente. |
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| 218. | | DURÁN, N.; MARTINEZ, D. S. T.; JUSTO, G. Z.; LIMA, R. de; CASTRO, V. L. S. S. de; UMBUZEIRO, G. de A.; BARBIERI, E.; DURÁN, M.; MELO, P. da S.; ALVES, O. L.; FÁVARO, W. J. Interlab study on nanotoxicology of representative graphene oxide. Journal of Physics, Bristol, v. 617, p. 1-9, 2015. Edition of the proceedings 4th International Conference on Safe Production and Use Nanomaterials (Nanosafe 2014) 18-20 November 2014, held a Grenoble, France.| Biblioteca(s): Embrapa Meio Ambiente. |
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| 219. | | KITAMURA, P. C.; SILVEIRA, M. A.; FERRAZ, J. M. G.; BUSCHINELLI, C. C. de A.; CASTRO, V. L. S. S. de; CHAIM, A.; CORRALES, F. M.; MIRANDA, J. I. Pré-diagnóstico agroambiental em microbacia: propostas de intervenção. Jaguariúna: Embrapa Meio Ambiente, 1999. 40p. (Embrapa Meio Ambiente. Documentos, 1)| Biblioteca(s): Embrapa Agrobiologia; Embrapa Agroindústria Tropical; Embrapa Amapá; Embrapa Amazônia Ocidental; Embrapa Amazônia Oriental; Embrapa Arroz e Feijão; Embrapa Clima Temperado; Embrapa Florestas; Embrapa Meio Ambiente; Embrapa Meio Norte / UEP-Parnaíba; Embrapa Meio-Norte; Embrapa Pantanal; Embrapa Roraima; Embrapa Semiárido; Embrapa Soja; Embrapa Solos; Embrapa Suínos e Aves; Embrapa Tabuleiros Costeiros; Embrapa Unidades Centrais; Embrapa Uva e Vinho. MenosEmbrapa Agrobiologia; Embrapa Agroindústria Tropical; Embrapa Amapá; Embrapa Amazônia Ocidental; Embrapa Amazônia Oriental; Embrapa Arroz e Feijão; Embrapa Clima Temperado; Embrapa Florestas; Embrapa Meio Ambiente; Embrapa Meio Norte / UEP-Parnaíba... Mostrar Todas |
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| 220. | | KITAMURA, P. C.; SILVEIRA, M. A.; FERRAZ, J. M. G.; BUSCHINELLI, C. C. de A.; CASTRO, V. L. S. S. de; CHAIM, A.; CORRALES, F. M.; MIRANDA, J. I. Pré-diagnóstico agroambiental em microbacia: propostas de intervenção. Jaguariúna: Embrapa Meio Ambiente, 1999. 40p. (Embrapa Meio Ambiente. Documentos, 1)| Biblioteca(s): Embrapa Territorial. |
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| Registros recuperados : 237 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
25/10/2017 |
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Data da última atualização: |
25/10/2017 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
SILVA, G. H. da; CLEMENTE, Z.; COA, F.; RODRIGUES NETO, L. L.; KHAN, L. U.; CARVALHO, H. W. P.; CASTRO, V. L. S. S. de; MARTINEZ, D. S. T.; MONTEIRO, R. T. R. |
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Afiliação: |
G. H. da SILVA; Z. CLEMENTE; F. COA; L. L. RODRIGUES NETO; L. U. KHAN; H. W. P. CARVALHO; VERA LUCIA SCHERHOLZ S DE CASTRO, CNPMA; D. S. T. MARTINEZ; R. T. R. MONTEIRO. |
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Título: |
Nanoecotoxicity and uptake of TiO2@MWCNT hybrid material on Danio rerio embryos. |
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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.OR3.11. p. 384. |
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Idioma: |
Inglês |
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Conteúdo: |
A process that is being widely used for environmental remediation is photocatalysis. The use of nanotechnology can highly improve this field, and there is already a wide range of nanomaterials employed in photocatalytic research and applications. A material that has been highlighted in this field is the TiO2@MWCNT, this combination increase the photocatalytic efficiency, and therefore being an extremely effective method for remediation of contaminants. Due to the importance of these hybrid materials, the production of such particles has been encouraged. However, concerns about their toxicity and safety when released into the environment should be considered. Therefore, to understand the role of TiO2@MWCNT in the environment, our main objective was to study the photocatalytic activity and toxicity of TiO2@MWCNT composite on Danio rerio embryos (zebrafish). For this purpose, TiO2@MWCNT nanomaterial was synthetized, by mechanical mixing method, and an early life stage assay was performed with zebrafish embryos. The parameters assessed were acute toxicity, hatching rate, growth, yolk sac size, and the sarcomere length. In addition, we employed ?-probe X-ray fluorescence spectroscopy to observe if nanoparticles were being uptake by zebrafish larvae. Also, the photocatalytic efficiency of the TiO2@MWCNT was assessed through indigo blue dye degradation using UV-Vis spectroscopy. TiO2@MWCNT characterization was performed by SEM, TEM and TGA analysis. Our results shown that the preparation method was efficient to loaded the TiO2 on the surface of MWCNT, and the composite was more photocatalytic than TiO2. Besides, no acute toxicity, nor sublethal effects in Danio rerio embryos was observed until 100 mg L-1. Nevertheless, µ-XRF showed that the larvae were ingesting the nanoparticle. In conclusion, TiO2@MWCNT is a promising material for environmental remediation, presenting high efficiency and low toxicity. MenosA process that is being widely used for environmental remediation is photocatalysis. The use of nanotechnology can highly improve this field, and there is already a wide range of nanomaterials employed in photocatalytic research and applications. A material that has been highlighted in this field is the TiO2@MWCNT, this combination increase the photocatalytic efficiency, and therefore being an extremely effective method for remediation of contaminants. Due to the importance of these hybrid materials, the production of such particles has been encouraged. However, concerns about their toxicity and safety when released into the environment should be considered. Therefore, to understand the role of TiO2@MWCNT in the environment, our main objective was to study the photocatalytic activity and toxicity of TiO2@MWCNT composite on Danio rerio embryos (zebrafish). For this purpose, TiO2@MWCNT nanomaterial was synthetized, by mechanical mixing method, and an early life stage assay was performed with zebrafish embryos. The parameters assessed were acute toxicity, hatching rate, growth, yolk sac size, and the sarcomere length. In addition, we employed ?-probe X-ray fluorescence spectroscopy to observe if nanoparticles were being uptake by zebrafish larvae. Also, the photocatalytic efficiency of the TiO2@MWCNT was assessed through indigo blue dye degradation using UV-Vis spectroscopy. TiO2@MWCNT characterization was performed by SEM, TEM and TGA analysis. Our results shown that the prepa... Mostrar Tudo |
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Palavras-Chave: |
Nanoecotoxicologia. |
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Thesaurus NAL: |
Danio rerio. |
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Categoria do assunto: |
W Química e Física |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/165540/1/RA-CastroVLSS-16BrazilMRSMeeting-2017-p384.pdf
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Marc: |
LEADER 02716nam a2200229 a 4500
001 2078103
005 2017-10-25
008 2017 bl uuuu u00u1 u #d
100 1 $aSILVA, G. H. da
245 $aNanoecotoxicity and uptake of TiO2@MWCNT hybrid material on Danio rerio embryos.$h[electronic resource]
260 $aIn: BRAZILIAN MRS MEETING, 16., 2017, Gramado. Proceedings... Gramado: Sociedade Brasileira de Pesquisa em Materiais, 2017. Ref. Q.OR3.11. p. 384.$c2017
520 $aA process that is being widely used for environmental remediation is photocatalysis. The use of nanotechnology can highly improve this field, and there is already a wide range of nanomaterials employed in photocatalytic research and applications. A material that has been highlighted in this field is the TiO2@MWCNT, this combination increase the photocatalytic efficiency, and therefore being an extremely effective method for remediation of contaminants. Due to the importance of these hybrid materials, the production of such particles has been encouraged. However, concerns about their toxicity and safety when released into the environment should be considered. Therefore, to understand the role of TiO2@MWCNT in the environment, our main objective was to study the photocatalytic activity and toxicity of TiO2@MWCNT composite on Danio rerio embryos (zebrafish). For this purpose, TiO2@MWCNT nanomaterial was synthetized, by mechanical mixing method, and an early life stage assay was performed with zebrafish embryos. The parameters assessed were acute toxicity, hatching rate, growth, yolk sac size, and the sarcomere length. In addition, we employed ?-probe X-ray fluorescence spectroscopy to observe if nanoparticles were being uptake by zebrafish larvae. Also, the photocatalytic efficiency of the TiO2@MWCNT was assessed through indigo blue dye degradation using UV-Vis spectroscopy. TiO2@MWCNT characterization was performed by SEM, TEM and TGA analysis. Our results shown that the preparation method was efficient to loaded the TiO2 on the surface of MWCNT, and the composite was more photocatalytic than TiO2. Besides, no acute toxicity, nor sublethal effects in Danio rerio embryos was observed until 100 mg L-1. Nevertheless, µ-XRF showed that the larvae were ingesting the nanoparticle. In conclusion, TiO2@MWCNT is a promising material for environmental remediation, presenting high efficiency and low toxicity.
650 $aDanio rerio
653 $aNanoecotoxicologia
700 1 $aCLEMENTE, Z.
700 1 $aCOA, F.
700 1 $aRODRIGUES NETO, L. L.
700 1 $aKHAN, L. U.
700 1 $aCARVALHO, H. W. P.
700 1 $aCASTRO, V. L. S. S. de
700 1 $aMARTINEZ, D. S. T.
700 1 $aMONTEIRO, R. T. R.
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