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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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Registro Completo
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Biblioteca(s): |
Embrapa Agroindústria Tropical. |
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Data corrente: |
12/01/2018 |
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Data da última atualização: |
18/01/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
COSTA, T. M.; BLAWID, R.; COSTA JÚNIOR, A. C. da; LIMA, M. F.; ARAGAO, F. A. S. de; ANDRADE, G. P. de; PIO-RIBEIRO G.; ARANDA, M. A.; INOUE-NAGATA, A. K.; NAGATA, T. |
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Afiliação: |
Thiago M. Costa, Universidade de Brasília, Departamento de Biologia Celular.; Rosana Blawid, Universidade de Brasília, Departamento de Biologia Celular.; Avanor Cidral da Costa Junior, Universidade Federal Rural de Pernambuco; MIRTES FREITAS LIMA, CNPH; FERNANDO ANTONIO SOUZA DE ARAGAO, CNPAT; Genira Pereira de Andrade, Universidade Federal Rural de Pernambuco; Gilvan Pio-Ribeiro, Universidade Federal Rural de Pernambuco; Miguel A. Aranda, Centro de Edaphology e Biologia Aplicada do Segura, Conselho Superior de Pesquisa Científica.; Alice Kazuko Inoue-Nagata, EMBRAPA Hortaliças; Tatsuya Nagata, Universidade de Brasília, Departamento de Biologia Celular. |
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Título: |
Complete genome sequence of melon yellowing?associated virus from melon plants with the severe yellowing disease in Brazil. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Archives of Virology, v. 162, n. 12, p. 3899-3901, 2017. |
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Idioma: |
Inglês |
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Palavras-Chave: |
Brasil; Melon. |
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Thesagro: |
Genoma; Melão. |
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Thesaurus NAL: |
Brazil; Genome. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00834naa a2200289 a 4500
001 2085206
005 2018-01-18
008 2017 bl uuuu u00u1 u #d
100 1 $aCOSTA, T. M.
245 $aComplete genome sequence of melon yellowing?associated virus from melon plants with the severe yellowing disease in Brazil.$h[electronic resource]
260 $c2017
650 $aBrazil
650 $aGenome
650 $aGenoma
650 $aMelão
653 $aBrasil
653 $aMelon
700 1 $aBLAWID, R.
700 1 $aCOSTA JÚNIOR, A. C. da
700 1 $aLIMA, M. F.
700 1 $aARAGAO, F. A. S. de
700 1 $aANDRADE, G. P. de
700 1 $aPIO-RIBEIRO G.
700 1 $aARANDA, M. A.
700 1 $aINOUE-NAGATA, A. K.
700 1 $aNAGATA, T.
773 $tArchives of Virology$gv. 162, n. 12, p. 3899-3901, 2017.
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Embrapa Agroindústria Tropical (CNPAT) |
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