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Distribución de metales pesados (Pb, Cd y Zn) en perfiles de sedimento asociado a Rhizophora mangle en el Río Sevilla - Ciénaga Grande de Santa Marta, Colombia.

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Author
Parra, J.P.
Espinosa, L.F.
Date
2008

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Alternative Title
Distribution of heavy metals (Pb, Cd, and Zn) in sediment profiles associated to Rhizophora mangle in Sevilla River - Ciénaga Grande de Santa Marta, Colombia.
Abstract
Con el propósito de evaluar la distribución vertical de metales pesados Pb, Cd y Zn en el sedimento asociado a las plantas de Rhizophora mangle, se determinaron las concentraciones potencialmente biodisponibles y no biodisponibles, en tres perfiles de sedimento colectados en el río Sevilla, Ciénaga Grande de Santa Marta. Las mediciones se hicieron con la técnica de espectrometría de emisión atómica de plasma inductivamente acoplado. Los resultados mostraron que en el ecosistema de manglar del río Sevilla estos metales se acumulan principalmente en formas no biodisponibles, lo cual indica que la mayor parte de estos elementos se encuentran retenidos en el sedimento. La retención del Pb, Cd y Zn en el sedimento de éste ecosistema de manglar está fuertemente relacionada con los parámetros fisicoquímicos pH, salinidad y potencial redox y con los contenidos de materia orgánica y de limos y arcillas.
In order to evaluate the vertical distribution of the heavy metals Pb, Cd, and Zn in sediments associated to Rhizophora mangle plants, potentially bioavailable and not bioavailable concentrations of these metals were determined in three sediment cores collected in the Sevilla River, Ciénaga Grande de Santa Marta. Measurements were carried out by inductively coupled plasma-atomic emission spectrometry. The results showed that in Sevilla River mangrove ecosystem these metals are accumulated principally in non-bioavailable forms, this means that a great part or them are retained in the sediment. The retention of Pb, Cd, and Zn in the sediments of this mangrove ecosystem is strongly related to the physicochemical parameters pH, salinity, and redox potential, and to organic matter, and silt and clays contents.
Journal
Boletín de investigaciones marinas y costeras
Volume
37
Issue/Article Nr
1
Publisher or University
INVEMAR, Santa Marta (Colombia)
Resource/Dataset Location
http://www.invemar.org.co/siad/descarga.jsp?type=documento&id=843
URI
http://hdl.handle.net/1834/3511
Collections
3. Boletín de Investigaciones Marinas y Costeras

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