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Memorias de investigación
Artículos en revistas:
Heavy metals immobilization capability of two iron-based nanoparticles (nZVI and Fe3O4): Soil and freshwater bioassays to assess ecotoxicological impact.
Año:2019
Áreas de investigación
  • Ciencias naturales y ciencias de la salud
Datos
Descripción
The contamination by heavy metals constitutes an environmental problem of great importance in the last decades, and demands of society for clean environments are increasingly evident. To achieve this goal, several strategies have appeared for the in situ remediation of soil contamination caused by heavy metals. This study evaluated two types of iron-based nanoparticles, zero-valent iron nanoparticles (nZVI) and Fe3O4 nanoparticles, for the effective immobilization of Furthermore, we conducted a set of ecotoxicological bioassays: Microtox® Test, Caenorhabditis elegans Test, and Phytoplankton Toxicity Tests, on selected soil and aquatic test organisms to both, i) evaluate the potential ecotoxicological risks associated with nanoparticles treatment, and ii) to define sensitive organisms to be used as suitable bioindicators of heavy metals pollution. The application of 5% nZVI significantly reduced the amount of bioavailable heavy metals, which was effective from an ecotoxicity point of view as a reduction of the toxicity of was observed. Among the bioassays used, C. elegans seems the most effective reference organism in detecting changes in the toxicity of and therefore, C. elegans was found to be a sensitive heavy metals pollution bioindicator. When the Combination index (CI) was obtained to determine combined heavy metals interactions, the results indicated that toxicity would be higher than that expected for Pb, Cd and Zn individually considered, due to the proved antagonistic interactions of those toxicants. The obtained results suggested that nZVI nanoparticles are susceptible to be used as a soil remediation strategy for heavy metal pollution, although a short reactive lifespan must be considered, and therefore its effectiveness in long periods remains to be elucidated.
Internacional
Si
JCR del ISI
Si
Título de la revista
Science of the Total Environment
ISSN
0048-9697
Factor de impacto JCR
6,551
Información de impacto
Volumen
656
DOI
Número de revista
Desde la página
421
Hasta la página
432
Mes
SIN MES
Ranking
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Participantes
  • Autor: C. FAJARDO (U. de Alcalá)
  • Autor: G. Costa (U. Complutense)
  • Autor: M. Nande (U. Complutense)
  • Autor: Maria Carmen Martin Fernandez (UPM)
  • Autor: M. Martín (U. Complutense)
  • Autor: S. Sánchez-Fortún (U. Complutense)
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  • Creador: Grupo de Investigación: PLANGER Germoplasma Vegetal
  • Departamento: Biotecnología - Biología Vegetal
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