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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. |
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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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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. |
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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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Registro original: |
Embrapa Solos (CNPS) |
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| 82. |  | CARVALHO, A. G. de; PEDROSA-MACEDO, J. H.; SANTOS, H. R. dos. Bioecologia de Sirex noctilio Fabricius, 1793 (Hymenoptera:Siricidae) em povoamentos de Pinus taede L. In: CONFERENCIA REGIONAL DA VESPA DA MADEIRA, SIREX NOCTILIO, NA AMERICA DO SUL, 1992, Florianopolis. Anais... Colombo: EMBRAPA-CNPF / FAO-ONU / USDA. Forest Service, 1993. p. 85-96. Colaboração da FAO-ONU, USDA, Forest Service, Funcema.| Biblioteca(s): Embrapa Florestas. |
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| 86. | | MACÊDO, J. K. A.; RODRIGUES NETO, J. C.; BARROS, J. S.; JUNGMANN, L.; ABDELNUR, P. V. Comparative protein analysis of oil palm mesocarp from Elaeis guineenses and Elaeis oleifera to investigate acidification process. In: ASMS CONFERENCE ON MASS SPECTOMETRY AND ALLIED TOPICS, 64., 2016, San Antonio, Texas. [Anais ...]. Santa Fe: ASMS, 2016. Não paginado. 1 Poster.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agroenergia. |
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| 88. | | MADEIRA NETO, J. da S.; MACEDO, J.; AZEVEDO, L. G de. Brazilian problem soils: distribution, characteristics and utilization. Yatabe : TARC, 1982. 20p. (Tropical Agriculture Research Series, n.15). Trabalho apresentado: INTERNATIONAL SYMPOSIUM ON DISTRIBUTION, CHARACTERISTICS AND UTILIZATION OF PROBLEM SOILS, Tsukuba, Japan, 1981.| Biblioteca(s): Embrapa Cerrados. |
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| 91. | | BAUCH, S. C.; RODRIGUEZ, L. C.; MACEDO, J. L. V. de. Caracterização do processo de comercialização de quatro produtos tipicamente presentes em sistemas agroflorestais no mercado de produtos horti-fruti-granjeiros de Manaus - AM. Serie Tecnica IPEF, Piracicaba, v. 14, n. 34, p. 199, jul. 2001. Edição da Memória do Simpósio Ibero-Americano de Gestão e Economia Florestal, 1., 2001, Porto Seguro. Posters.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Ocidental. |
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| 99. | | MORAES, C. R. de A.; TEIXEIRA, W. G.; MACEDO, J. L. V. de. Efeito da adubação e da inoculação com fungos micorrízicos (FMVA) no crescimento inicial e no estado nutricional do coqueiro (Cocus nucifera L.) em um sistema agroflorestal na Amazônia. In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 26., 1997, Rio de Janeiro. Informação, globalização, uso do solo: anais. [Viçosa, MG]: Sociedade Brasileira de Ciência do Solo, 1997. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Ocidental. |
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| Registros recuperados : 477 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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