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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Tracking iron oxide nanoparticles in plant organs using magnetic measurements

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Autor(es):
Govea-Alcaide, E. ; Masunaga, S. H. ; De Souza, A. ; Fajardo-Rosabal, L. ; Effenberger, F. B. ; Rossi, L. M. ; Jardim, R. F.
Número total de Autores: 7
Tipo de documento: Artigo Científico
Fonte: JOURNAL OF NANOPARTICLE RESEARCH; v. 18, n. 10 OCT 10 2016.
Citações Web of Science: 6
Resumo

Common bean plants were grown in soil and irrigated with water solutions containing different concentrations of Fe3O4 nanoparticles (NPs) with a mean diameter close to 10 nm. No toxicity on plant growth has been detected as a consequence of Fe deficiency or excess in leaves. In order to track the Fe3O4 NPs, magnetization measurements were performed in soils and in three different dried organs of the plants: roots, stems, and leaves. Some magnetic features of both temperature and magnetic field dependence of magnetization M(T, H) arising from Fe3O4 NPs were identified in all the three organs of the plants. Based on the results of saturation magnetization M-s at 300 K, the estimated number of Fe3O4 NPs was found to increase from 2 to 3 times in leaves of common bean plants irrigated with solutions containing magnetic material. The combined results indicated that M(T, H) measurements, conducted in a wide range of temperature and applied magnetic fields up to 70 kOe, constitute a useful tool through which the uptake, translocation, and accumulation of magnetic nanoparticles by plant organs may be monitored and tracked. (AU)

Processo FAPESP: 14/19245-6 - Procura por novos materiais supercondutores
Beneficiário:Renato de Figueiredo Jardim
Linha de fomento: Bolsas no Exterior - Pesquisa
Processo FAPESP: 13/07296-2 - CDMF - Centro de Desenvolvimento de Materiais Funcionais
Beneficiário:Elson Longo da Silva
Linha de fomento: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs
Processo FAPESP: 14/12392-3 - Mapeamento magnético de nanopartículas magnéticas em plantas de feijão crescidas em solo
Beneficiário:Renato de Figueiredo Jardim
Linha de fomento: Auxílio à Pesquisa - Pesquisador Visitante - Internacional