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Time of flight secondary ion mass spectrometry and high-resolution transmission electron microscopy/energy dispersive spectroscopy: A preliminary study of the distribution of Cu²⁺ and Cu²⁺/Pb²⁺ on a Bt horizon surfaces

Cerqueira, B ; Vega, F.A ; Serra, C ; Silva, L.F.O ; Andrade, M.L

Journal of hazardous materials, 2011-11, Vol.195, p.422-431 [Periódico revisado por pares]

Kidlington: Elsevier B.V

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Título:
Time of flight secondary ion mass spectrometry and high-resolution transmission electron microscopy/energy dispersive spectroscopy: A preliminary study of the distribution of Cu²⁺ and Cu²⁺/Pb²⁺ on a Bt horizon surfaces
Autor: Cerqueira, B ; Vega, F.A ; Serra, C ; Silva, L.F.O ; Andrade, M.L
Assuntos: Applied sciences ; Atmospheric pollution ; B horizons ; clay fraction ; Contaminants ; copper ; Copper - chemistry ; Decontamination. Miscellaneous ; Desorption ; energy ; Exact sciences and technology ; gibbsite ; heavy metals ; hematite ; image analysis ; lead ; Lead - chemistry ; Luvisols ; mass spectrometry ; Microscopy, Electron, Transmission - methods ; organic matter ; oxides ; polluted soils ; Pollution ; remediation ; Samples ; Soil (material) ; Soil and sediments pollution ; soil pollution ; Sorption ; Spectrometry, Mass, Secondary Ion - methods ; Spectroscopy ; Statistical analysis ; Statistical methods ; Surface Properties ; transmission electron microscopy ; vermiculite
É parte de: Journal of hazardous materials, 2011-11, Vol.195, p.422-431
Notas: http://dx.doi.org/10.1016/j.jhazmat.2011.08.059
ObjectType-Article-1
SourceType-Scholarly Journals-1
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Descrição: Relatively new techniques can help in determining the occurrence of mineral species and the distribution of contaminants on soil surfaces such as natural minerals and organic matter. The Bt horizon from an Endoleptic Luvisol was chosen because of its well-known sorption capability. The samples were contaminated with Cu²⁺ and/or Pb²⁺ and both sorption and desorption experiments were performed. The preferential distribution of the contaminant species (⁶³Cu and ²⁰⁸Pb) to the main soil components and their associations were studied together with the effectiveness of the surface sorption and desorption processes. The results obtained were compared with non-contaminated samples as well as with previous results obtained by different analytical techniques and advanced statistical analysis. Pb²⁺ competes favorably for the sorption sites in this soil, mainly in oxides and the clay fraction. Cu²⁺ and Pb²⁺ were mainly associated with hematite, gibbsite, vermiculite and chlorite. This study will serve as a basis for further scientific research on the soil retention of heavy metals. New techniques such as spectroscopic imaging and transmission electron microscopy make it possible to check which soil components retain heavy metals, thereby contributing to propose effective measures for the remediation of contaminated soil.
Editor: Kidlington: Elsevier B.V
Idioma: Inglês

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Time of flight secondary ion mass spectrometry and high-resolution transmission electron microscopy/energy dispersive spectroscopy: A preliminary study of the distribution of Cu²⁺ and Cu²⁺/Pb²⁺ on a Bt horizon surfaces

Cerqueira, B ; Vega, F.A ; Serra, C ; Silva, L.F.O ; Andrade, M.L

Kidlington: Elsevier B.V

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