Assessment of heavy metals pollution (Hg, Cr, Cd, Ni) in the sediments of Mallorquin Lagoon - Barranquilla, Colombia

The levels of four toxic heavy metals (Hg; Cr; Cd; Ni) present in 17 sediment samples of the Mallorquin lagoon –Barranquilla (N Colombia) were investigated in order to assessing the potential risks of accumulation. The sample preparation was performed by acid microwave digestion with “Multiwave” sys...

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Autores:
Portz, Luana
Manzolli, Rogerio Portantiolo
Ferreira de Andrade, Carlos Francisco
Villate Daza, Diego Andres
Bolivar Bandeira, Dairo Aldonso
Alcántara-Carrió, Javier
Tipo de recurso:
http://purl.org/coar/resource_type/c_816b
Fecha de publicación:
2020
Institución:
Corporación Universidad de la Costa
Repositorio:
REDICUC - Repositorio CUC
Idioma:
eng
OAI Identifier:
oai:repositorio.cuc.edu.co:11323/6486
Acceso en línea:
https://hdl.handle.net/11323/6486
https://repositorio.cuc.edu.co/
Palabra clave:
Ecosystem
Mercury
Coastal lagoon
Igeo - Index of geo-accumulation
Rights
openAccess
License
CC0 1.0 Universal
Description
Summary:The levels of four toxic heavy metals (Hg; Cr; Cd; Ni) present in 17 sediment samples of the Mallorquin lagoon –Barranquilla (N Colombia) were investigated in order to assessing the potential risks of accumulation. The sample preparation was performed by acid microwave digestion with “Multiwave” system, carried out using GFAAS. High contamination levels, especially for Hg, Cr and Cd, were detected in samples M4 (0.199; 96.71; 1.212 μg.g-1), M5 (0.153; 100.38; 1.076 μg.g-1), M6 (0.140; 97.74; 1.850 μg.g-1), M8 (0.122; 90.41; 1.023 μg.g-1) y M9 (0.143; 100.92; 1.086 μg.g-1). The results reflect the anthropogenic activities, as accelerated urbanization without planning, deposit for solid waste, contribution from the Magdalena River, affected by illegal mining. In addition, the Leon stream drains the entire metropolitan area by pouring into the lagoon a great amount of untreated sewage every day. The concentrations found in most samples of the Hg, Cr and Cd elements are above the internationally recommended limits. The levels of metals found are alarming, considering that this lagoon represents a source of food for the population of its surroundings.