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| Registros recuperados : 243 | |
| 122. |  | SILVA, M. M. P. da; REIS, V. M.; URQUIAGA, S.; BODDEY, R. M.; XAVIER, D. F.; DOBEREINER, J. Selecao de genotipos de capim elefante (Pennisetum purpureum Schum.) para producao de biomassa em solos com baixa disponibilidade de nitrogenio. In: REUNIAO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 1996, Fortalez, Anais... Fortaleza: SBZ, 1996. p.178-179. v.2| Biblioteca(s): Embrapa Gado de Leite. |
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| 123. | | MORENO, M. B.; FLORES CANTILLANO, R. F.; LEITE, T. B.; SILVA, M. M. da; RIBEIRO, J. A. Teor de compostos fenólicos e atividade antioxidante em mãças cv. fuji minimamente processadas e tratadas com antioxidantes após armazenamento em câmara fria. In: CONGRESO ARGENTINO DE CIENCIA Y TECNOLOGÍA DE ALIMENTOS, 14.; SIMPOSIO INTERNACIONAL DE NUEVAS TECNOLOGÍAS, 5.; SIMPOSIO LATINOAMERICANO SOBRE HIGIENE Y CALIDAD DE ALIMENTOS, 3., 2013., Rosario/Santa Fé/Argentina. Anais.. Argentina: CYTAL, 2013.| Biblioteca(s): Embrapa Clima Temperado. |
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| 125. | | DIAS, K. M.; SILVA, M. M.; WANDER, A. E.; SALVIANO, P. A. P.; CARVALHO, E. R. de. Uma perspectiva de desenvolvimento rural baseada nas características socioeconômicas dos produtores rurais de Iporá e região, Estado de Goiás/GO. Revista Verde de Agroecologia e Desenvolvimento Sustentável, Pombal, v. 10, n. 4, p. 49-57, out./dez. 2015.| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 127. | | DONADUZZI, C. M.; CARDOZO JÚNIOR, E. L.; DONADUZZI, E. M.; SILVA, M. M. da; STURION, J. A.; CORREA, G. Variação nos teores de polifenóis totais e taninos em dezesseis progênies de erva-mate (Ilex paraguariensis St. Hill.) cultivadas em três municípios do Paraná. Arquivos de Ciência da Saúde da Unipar, Toledo, v. 7, n. 2, p. 129-133, maio/ago. 2003.| Biblioteca(s): Embrapa Florestas. |
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| 128. | | ALVES, N. M. C.; ALMEIDA, F. de A. C.; GOMES, J. P.; LEAL, A. S. C.; SILVA, M. M. da. Viabilidade e micoflora de sementes de amendoim irradiadas com cobalto (60Co). Revista Brasileira de Engenharia Agrícola e Ambiental, v. 15, n. 3, p. 289-295, mar., 2011.| Biblioteca(s): Embrapa Algodão. |
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| 130. | | MATOS, R. da S.; RODRIGUES, M. T.; BOMFIM, M. A. D.; SILVA, M. M. C da; FELISBERTO, N. R. de O.; SILVA, S. P. da. CLA in milk dairy goats. In: ANNUAL MEETING BRAZILIAN SOCIETY OF ANIMAL SCIENCE, 50., 2013, Campinas. The integration of knowledge in animal production: abstracts. Campinas: SBZ, 2013. Abstract 6HB4.| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 132. | | SILVA, M. M. da; ARAUJO, J. L. P.; BARBOSA, A. D.; SILVA, A. F.; SANTANA, L. M. de; FRANÇA, C. R. R. S. Comportamento econômico e produtivo da horta comunitária agroecológica de Nova Descoberta. In: CONGRESSO BRASILEIRO DE AGROECOLOGIA, 4., 2006, Belo Horizonte. Construindo horizontes sustentáveis: anais. Belo Horizonte: EMATER-MG, 2006. 1 CD-ROM.| Biblioteca(s): Embrapa Semiárido. |
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| 135. | | WASSERMAN, M. A.; BARTOLY, F.; VIANA, A. G.; SILVA, M. M.; ROCHEDO, E. R. R.; PEREZ, D. V.; CONTI, C. C. Soil to plant transfer of 137Cs and 60Co in Ferralsol, Nitisol and Acrisol. Journal of Environmental Radioactivity, v. 99, n. 3, p. 546-553, Mar. 2008.| Biblioteca(s): Embrapa Solos. |
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| 137. | | AZEVEDO, M. R. de Q. A.; ALMEIDA, F. de A. C.; GOUVEIA, J. P. G. de; AZEVEDO, C. A. V. de; SILVA, M. M. da; PORDEUS, R. V. Germinação e vigor no desenvolvimento inicial do gergelim: efeito da salinidade da água de irrigação. Revista Brasileira de Produtos Agroindustriais, v.5, n.2, p.169-174, 2003.| Biblioteca(s): Embrapa Algodão. |
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| 139. | | LACERDA, K. A. P.; SILVA, M. M. de S.; CARNEIRO, M. A. C.; REIS, E. F. dos; SAGGIN JUNIOR, O. J. Fungos micorrízicos arbusculares e adubação fosfatada no crescimento inicial de seis espécies arbóreas do cerrado. Cerne, Lavras, v. 17, n. 3, p. 377-386, jul./set. 2011.| Biblioteca(s): Embrapa Agrobiologia; Embrapa Florestas. |
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| Registros recuperados : 243 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
08/03/2023 |
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Data da última atualização: |
13/03/2023 |
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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: |
SILVA, M. M. da; WASSERMAN, M. A. V.; WASSERMAN, J. C. de F. A.; PEREZ, D. V.; PEREIRA, T. R.; BARRETO, M. B.; SANTOS-OLIVEIRA, R. |
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Afiliação: |
MICHELE MARIA DA SILVA, COMISSÃO NACIONAL DE ENERGIA NUCLEAR; MARIA ANGÉLICA VERGARA WASSERMAN, COMISSÃO NACIONAL DE ENERGIA NUCLEAR; JÚLIO CESAR DE FARIA ALVIM WASSERMAN, UNIVERSIDADE FEDERAL FLUMINENSE; DANIEL VIDAL PEREZ, CNPS; TATIANE ROCHA PEREIRA, COMISSÃO NACIONAL DE ENERGIA NUCLEAR; MANUELLA BORGES BARRETO, COMISSÃO NACIONAL DE ENERGIA NUCLEAR; RALPH SANTOS-OLIVEIRA, INSTITUTO DE ENGENHARIA NUCLEAR. |
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Título: |
Effect of nanomaterials on the bioavailability of metals in sediments from a highly impacted tropical coastal environment. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Environmental Nanotechnology, Monitoring & Management, v. 20, 100799, Dec. 2023. |
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DOI: |
https://doi.org/10.1016/j.enmm.2023.100799 |
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Idioma: |
Inglês |
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Conteúdo: |
In this study, the impact of nanoparticles on the chemical behavior of metals in a tropical coastal environment was evaluated in a microcosm assay. The microcosms were assembled to reproduce the original environmental conditions, to evaluate the effects of two different nanoparticles. The aquariums were filled with water and sediment from Cunha River (Rio de Janeiro - Brazil) - which is highly contaminated by metals and organic compounds - and nanoparticles of hydroxyapatite (500 nm) and poly lactic-co-glycolic acid (PLGA) nanoparticles doped with Holmium-166 (200 nm), both radiolabeled with 99mTc. The quantification of trace metals (Cu, Zn, Mn, Fe, Cr and Pb) was performed in the water samples. The concentration data obtained for Fe, Cr and Pb were lower than ICP-OES Detection Limits (Fe: DL < 0.0343 mg.L-1, Cr: DL < 0.0036 mg.L-1 and Pb: DL < 0.0291 mg.L-1), while the results for Cu, Zn and Mn demonstrated that the presence of hydroxyapatite and PLGA nanoparticles had no influence on the behavior of dissolved metals, probably because of the high organic loads of the system, which may have overwhelmed or masked the interaction of nanomaterials with metals, once the natural organic matter could interact with the nanoparticles, favoring their aggregation and sedimentation and thus reducing their bioavailability and reactivity. Geochemical fractionation presented a relevant association of metals with the organic phase. In terms of environmental impact assessment of nanomaterials, it was concluded through 99mTc labelling that both nanomaterials (about 30% to 50%) remained in solution during the 49 h of the experiment. MenosIn this study, the impact of nanoparticles on the chemical behavior of metals in a tropical coastal environment was evaluated in a microcosm assay. The microcosms were assembled to reproduce the original environmental conditions, to evaluate the effects of two different nanoparticles. The aquariums were filled with water and sediment from Cunha River (Rio de Janeiro - Brazil) - which is highly contaminated by metals and organic compounds - and nanoparticles of hydroxyapatite (500 nm) and poly lactic-co-glycolic acid (PLGA) nanoparticles doped with Holmium-166 (200 nm), both radiolabeled with 99mTc. The quantification of trace metals (Cu, Zn, Mn, Fe, Cr and Pb) was performed in the water samples. The concentration data obtained for Fe, Cr and Pb were lower than ICP-OES Detection Limits (Fe: DL < 0.0343 mg.L-1, Cr: DL < 0.0036 mg.L-1 and Pb: DL < 0.0291 mg.L-1), while the results for Cu, Zn and Mn demonstrated that the presence of hydroxyapatite and PLGA nanoparticles had no influence on the behavior of dissolved metals, probably because of the high organic loads of the system, which may have overwhelmed or masked the interaction of nanomaterials with metals, once the natural organic matter could interact with the nanoparticles, favoring their aggregation and sedimentation and thus reducing their bioavailability and reactivity. Geochemical fractionation presented a relevant association of metals with the organic phase. In terms of environmental impact assessment of nanomateria... Mostrar Tudo |
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Palavras-Chave: |
Guanabara Bay; Microcosm assay; Polluted aquatic environment. |
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Thesaurus NAL: |
Metals; Nanoparticles; Organic matter. |
|
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02559naa a2200277 a 4500
001 2152181
005 2023-03-13
008 2023 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.enmm.2023.100799$2DOI
100 1 $aSILVA, M. M. da
245 $aEffect of nanomaterials on the bioavailability of metals in sediments from a highly impacted tropical coastal environment.$h[electronic resource]
260 $c2023
520 $aIn this study, the impact of nanoparticles on the chemical behavior of metals in a tropical coastal environment was evaluated in a microcosm assay. The microcosms were assembled to reproduce the original environmental conditions, to evaluate the effects of two different nanoparticles. The aquariums were filled with water and sediment from Cunha River (Rio de Janeiro - Brazil) - which is highly contaminated by metals and organic compounds - and nanoparticles of hydroxyapatite (500 nm) and poly lactic-co-glycolic acid (PLGA) nanoparticles doped with Holmium-166 (200 nm), both radiolabeled with 99mTc. The quantification of trace metals (Cu, Zn, Mn, Fe, Cr and Pb) was performed in the water samples. The concentration data obtained for Fe, Cr and Pb were lower than ICP-OES Detection Limits (Fe: DL < 0.0343 mg.L-1, Cr: DL < 0.0036 mg.L-1 and Pb: DL < 0.0291 mg.L-1), while the results for Cu, Zn and Mn demonstrated that the presence of hydroxyapatite and PLGA nanoparticles had no influence on the behavior of dissolved metals, probably because of the high organic loads of the system, which may have overwhelmed or masked the interaction of nanomaterials with metals, once the natural organic matter could interact with the nanoparticles, favoring their aggregation and sedimentation and thus reducing their bioavailability and reactivity. Geochemical fractionation presented a relevant association of metals with the organic phase. In terms of environmental impact assessment of nanomaterials, it was concluded through 99mTc labelling that both nanomaterials (about 30% to 50%) remained in solution during the 49 h of the experiment.
650 $aMetals
650 $aNanoparticles
650 $aOrganic matter
653 $aGuanabara Bay
653 $aMicrocosm assay
653 $aPolluted aquatic environment
700 1 $aWASSERMAN, M. A. V.
700 1 $aWASSERMAN, J. C. de F. A.
700 1 $aPEREZ, D. V.
700 1 $aPEREIRA, T. R.
700 1 $aBARRETO, M. B.
700 1 $aSANTOS-OLIVEIRA, R.
773 $tEnvironmental Nanotechnology, Monitoring & Management$gv. 20, 100799, Dec. 2023.
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