Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/41861
metadata.artigo.dc.title: Applications in environmental bioinorganic: nutritional and ultrastructural evaluation and calculus of thermodynamic and structural properties of metal-oxalate complexes.
metadata.artigo.dc.creator: Tolentino, Terezinha Alves
Bertoli, Alexandre Carvalho
Pires, Maírados Santos
Carvalho, Ruy
Labory, Claudia Regina Gontijo
Nunes, Janaira Santana
Freitas, Matheus Puggina de
metadata.artigo.dc.subject: Pb
Oxalate crystals
Raphids
Structural analysis
Lead
metadata.artigo.dc.publisher: Elsevier
metadata.artigo.dc.date.issued: 5-Nov-2015
metadata.artigo.dc.identifier.citation: TOLENTINO, T. A. et al. Applications in environmental bioinorganic: nutritional and ultrastructural evaluation and calculus of thermodynamic and structural properties of metal-oxalate complexes. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, [S.l.], v. 150, p. 750-757, Nov. 2015. DOI: 10.1016/j.saa.2015.06.016.
metadata.artigo.dc.description.abstract: Lead (Pb) is known by its toxicity both for animals and plants. In order to evaluate its toxicity, plants of Brachiaria brizantha were cultivated on nutritive solution of Hoagland during 90 days and submitted to different concentrations of Pb. The content of macro and micronutrients was evaluated and there was a reduction on root content of Ca, besides the lowest dosages of Pb had induced an increase of N, S, Mn, Cu, Zn and Fe. The cell ultrastructure of leaves and roots were analyzed by transmission electronic microscopy (TEM). Among the main alterations occurred there were invaginations on cell walls, the presence of crystals on the root cells, accumulation of material on the interior of cells and vacuolar compartmentalization. On the leaves the degradation of chloroplasts was observed, as well as the increase of vacuoles. Structures for the formation of oxalate crystals were proposed through molecular modeling and thermodynamic stability. Calculi suggest the formation of highly stable metal-oxalate complexes.
metadata.artigo.dc.identifier.uri: https://www.sciencedirect.com/science/article/abs/pii/S1386142515007301
http://repositorio.ufla.br/jspui/handle/1/41861
metadata.artigo.dc.language: en_US
Appears in Collections:DQI - Artigos publicados em periódicos

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