Influencia del río Manzanares en la biodisponibilidad de metales pesados (Co, Cr, Pb, Zn) en la zona costera frente a la ciudad de Cumaná, estado Sucre, Venezuela

  1. Rodríguez, Ernesto 1
  2. Romero, Daisy 2
  3. Martínez, Gregorio 3
  4. Fermín, Ivis 3
  5. Senior, William 3
  1. 1 Departamento de Ciencias, Unidad de Cursos Básicos, Universidad de Oriente, Núcleo de Anzoátegui, Venezuela.
  2. 2 Departamento de Química, Escuela de Ciencias, Universidad de Oriente, Núcleo de Sucre, Venezuela.
  3. 3 Departamento de Oceanografía, Instituto Oceanográfico de Venezuela, Universidad de Oriente Núcleo de Sucre, Venezuela.
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Revue:
Avances en Química

ISSN: 1856-5301

Année de publication: 2012

Titre de la publication: Enero-Abril

Volumen: 7

Número: 1

Pages: 57-63

Type: Article

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D'autres publications dans: Avances en Química

Résumé

The concentrations of heavy metals Co, Cr, Pb and Zn in the bioavailable fraction in surface sediments of marine-coastal region of the city of Cumana, Venezuela, were studied during periods of drought and rain, in 17 sampling stations located along the shoreline. Significant differences between the two periods of sampling were detected for chromium and lead concentrations, reaching the highest values during the rainy season. For the rest of the metals studied a similar behavior was found for both periods. Likewise, significant differences were observed for chromium and lead, showing a greater enrichment of the latter in the area of high river influence.

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