Idioma:

Interaction of U(VI) with Schizophyllum commune studied by microscopic and spectroscopic methods

Günther, Alix ; Raff, Johannes ; Merroun, Mohamed Larbi ; Roßberg, André ; Kothe, Erika ; Bernhard, Gert

Biometals, 2014-08, Vol.27 (4), p.775-785 [Periódico revisado por pares]

Dordrecht: Springer Netherlands

Texto completo disponível

Citações Citado por

Enviar para

Título:
Interaction of U(VI) with Schizophyllum commune studied by microscopic and spectroscopic methods
Autor: Günther, Alix ; Raff, Johannes ; Merroun, Mohamed Larbi ; Roßberg, André ; Kothe, Erika ; Bernhard, Gert
Assuntos: Biochemistry ; Biomedical and Life Sciences ; Cell Biology ; Cell Wall - metabolism ; Fluorescence ; Fungi ; Hydrogen-Ion Concentration ; Life Sciences ; Medicine/Public Health ; Microbiology ; Pharmacology/Toxicology ; Phosphates ; Plant Physiology ; Scanning electron microscopy ; Schizophyllum - metabolism ; Schizophyllum - ultrastructure ; Sorption ; Speciation ; Spectrometry, Fluorescence ; Spectroscopy ; Spectrum analysis ; Uranium ; Uranium - metabolism ; X-Ray Absorption Spectroscopy
É parte de: Biometals, 2014-08, Vol.27 (4), p.775-785
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ObjectType-Article-2
ObjectType-Feature-1
Descrição: Biosorption of actinides like uranium by fungal cells can play an important role in the mobilization or immobilization of these elements in nature. Sorption experiments of U(VI) with Schizophyllum commune at different initial uranium concentrations and varying metal speciation showed high uranium sorption capacities in the pH range of 4–7. A combination of high angle annular dark-field and scanning transmission electron microscopy analysis (HAADF-STEM) showed that living mycelium cells accumulate uranium at the cell wall and intracellular. For the first time the fluorescence properties of uranium accumulates were investigated by means of time-resolved laser-induced fluorescence spectroscopy (TRLFS) beside the determination of corresponding structural parameters using X-ray absorption fine structure spectroscopy (EXAFS). While the oxidation state of uranium remained unchanged during sorption, uranium speciation changed significantly. Extra and intracellular phosphate groups are mainly responsible for uranium binding. TRLFS spectra clearly show differences between the emission properties of dissolved species in the initial mineral medium and of uranium species on fungi. The latter were proved to be organic and inorganic uranyl phosphates formed depending on the uranyl initial concentration and in some cases on pH.
Editor: Dordrecht: Springer Netherlands
Idioma: Inglês;Holandês

Links

View this record in MEDLINE/PubMed

Voltar para lista de resultados

Anterior Resultado 3 Avançar Ir para próxima página

Realização: Logos de Redes Sociais:

Interaction of U(VI) with Schizophyllum commune studied by microscopic and spectroscopic methods

Günther, Alix ; Raff, Johannes ; Merroun, Mohamed Larbi ; Roßberg, André ; Kothe, Erika ; Bernhard, Gert

Dordrecht: Springer Netherlands

Buscando em bases de dados remotas. Favor aguardar.