Heavy metal distribution in superficial sedimenta ta Saco, Gulf of Cariaco, Sucre, Venezuela.

The Gulf of Cariaco is a marine ecosystem with high primary productivity, which gives it an ecological and socioeconomic importance. Nevertheless, anthropogenic activities around the Gulf produce wastes that are deposited directly or by runoff into the sediments, and consequently, increases concentr...

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Autores: Fuentes H., María Valentina, Rojas de Astudillo, Luisa, Diaz, Alfredo, Martínez, Gregorio
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2010
País:Costa Rica
Institución:Universidad de Costa Rica
Repositorio:Portal de Revistas UCR
Idioma:español
OAI Identifier:oai:portal.ucr.ac.cr:article/20062
Acceso en línea:https://revistas.ucr.ac.cr/index.php/rbt/article/view/20062
Access Level:acceso abierto
Palabra clave:sequential extraction
geochemical fractions
heavy metals
Gulf of Cariaco
Venezuela
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network_acronym_str CR
network_name_str Costa Rica
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dc.title.none.fl_str_mv Heavy metal distribution in superficial sedimenta ta Saco, Gulf of Cariaco, Sucre, Venezuela.
Distribución de metales pesados en los sedimentos superficiales del Saco del Golfo de Cariaco, Sucre, Venezuela
title Heavy metal distribution in superficial sedimenta ta Saco, Gulf of Cariaco, Sucre, Venezuela.
spellingShingle Heavy metal distribution in superficial sedimenta ta Saco, Gulf of Cariaco, Sucre, Venezuela.
Fuentes H., María Valentina
sequential extraction
geochemical fractions
heavy metals
Gulf of Cariaco
Venezuela
sequential extraction
geochemical fractions
heavy metals
Gulf of Cariaco
Venezuela
title_short Heavy metal distribution in superficial sedimenta ta Saco, Gulf of Cariaco, Sucre, Venezuela.
title_full Heavy metal distribution in superficial sedimenta ta Saco, Gulf of Cariaco, Sucre, Venezuela.
title_fullStr Heavy metal distribution in superficial sedimenta ta Saco, Gulf of Cariaco, Sucre, Venezuela.
title_full_unstemmed Heavy metal distribution in superficial sedimenta ta Saco, Gulf of Cariaco, Sucre, Venezuela.
title_sort Heavy metal distribution in superficial sedimenta ta Saco, Gulf of Cariaco, Sucre, Venezuela.
dc.creator.none.fl_str_mv Fuentes H., María Valentina
Rojas de Astudillo, Luisa
Diaz, Alfredo
Martínez, Gregorio
author Fuentes H., María Valentina
author_facet Fuentes H., María Valentina
Rojas de Astudillo, Luisa
Diaz, Alfredo
Martínez, Gregorio
author_role author
author2 Rojas de Astudillo, Luisa
Diaz, Alfredo
Martínez, Gregorio
author2_role author
author
author
dc.subject.none.fl_str_mv sequential extraction
geochemical fractions
heavy metals
Gulf of Cariaco
Venezuela
sequential extraction
geochemical fractions
heavy metals
Gulf of Cariaco
Venezuela
topic sequential extraction
geochemical fractions
heavy metals
Gulf of Cariaco
Venezuela
sequential extraction
geochemical fractions
heavy metals
Gulf of Cariaco
Venezuela
description The Gulf of Cariaco is a marine ecosystem with high primary productivity, which gives it an ecological and socioeconomic importance. Nevertheless, anthropogenic activities around the Gulf produce wastes that are deposited directly or by runoff into the sediments, and consequently, increases concentrations of metals in this ecosystem. The objective of this study was to determine the distribution of cadmium, copper, lead, manganese, nickel and zinc in geochemical fractions of surface sediments, using modified BCR sequential extraction procedure. The concentrations were measured using flame atomic absorption spectroscopy. In addition, the contents of soluble and exchangeable metals associated to carbonate fractions, determined by BCR, were compared with those determined by the method of Campanella. Samples were collected in 12 stations during June 2007. The applied methodologies were evaluated with a certified reference material of marine sediments (HISS-1) and the results indicated that these methods provide adequate accuracy and precision for the extraction of metals. The total metal concentrations (μg g-1) were, Cd: < limit of detection (LD)-5.0; Pb: 1.79-60.41; Cu: no detected (ND)-42.18; Zn: 25.13-104.57; Mn: 66.31-80.29 and Ni: 3.29-24.58. Cd, Cu, Ni and Pb at several stations, exceeded the Canadian Sediment Quality Guidelines of the Lowest Effect Levels (LEL). Cadmium was identified as being the most mobile of the elements, having the highest concentrations in soluble and exchangeable cations and carbonates. However, Pb, Cu, Mn and Zn levels were found highly associated to organic matter and sulfide fractions. The methods did not show significant statistical differences for the extraction of soluble and exchangeable cations and the metals associated to carbonate fraction. There are several significant correlations between heavy metals, which suggest their common origin.
publishDate 2010
dc.date.none.fl_str_mv 2010-10-01
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
Article
artículo original
http://purl.org/coar/resource_type/c_2df8fbb1
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://revistas.ucr.ac.cr/index.php/rbt/article/view/20062
10.15517/rbt.v58i0.20062
url https://revistas.ucr.ac.cr/index.php/rbt/article/view/20062
identifier_str_mv 10.15517/rbt.v58i0.20062
dc.language.none.fl_str_mv spa
language spa
dc.relation.none.fl_str_mv https://revistas.ucr.ac.cr/index.php/rbt/article/view/20062/20265
dc.rights.none.fl_str_mv Derechos de autor 2010 Revista de Biología Tropical
http://creativecommons.org/licenses/by/4.0
acceso abierto
http://purl.org/coar/access_right/c_abf2
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Derechos de autor 2010 Revista de Biología Tropical
http://creativecommons.org/licenses/by/4.0
acceso abierto
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidad de Costa Rica
publisher.none.fl_str_mv Universidad de Costa Rica
dc.source.none.fl_str_mv Revista de Biología Tropical; Vol. 58 No. S3 (2010): Volume 58 – Supplement 3 – Octubre 2010: Proceedings on the 34th Scientific Meeting of the Association of Marine Laboratories of the Caribbean (AMLC); 129–140
Revista de Biología Tropical; Vol. 58 Núm. S3 (2010): Volume 58 – Suplemento 3 – Octubre 2010: Memorias de la 34ta Reunión Científica de la Asociación de Laboratorios Marinos del Caribe (ALMC); 129–140
Revista Biología Tropical; Vol. 58 N.º S3 (2010): Volume 58 – Suplemento 3 – Octubre 2010: Memorias de la 34ta Reunión Científica de la Asociación de Laboratorios Marinos del Caribe (ALMC); 129–140
2215-2075
0034-7744
10.15517/rbt.v58i0
reponame:Portal de Revistas UCR
instname:Universidad de Costa Rica
instacron:UCR
instname_str Universidad de Costa Rica
instacron_str UCR
institution UCR
reponame_str Portal de Revistas UCR
collection Portal de Revistas UCR
repository.name.fl_str_mv Portal de Revistas UCR - Universidad de Costa Rica
repository.mail.fl_str_mv jorge.polanco@ucr.ac.cr
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spelling Heavy metal distribution in superficial sedimenta ta Saco, Gulf of Cariaco, Sucre, Venezuela.Distribución de metales pesados en los sedimentos superficiales del Saco del Golfo de Cariaco, Sucre, VenezuelaFuentes H., María ValentinaRojas de Astudillo, LuisaDiaz, AlfredoMartínez, Gregoriosequential extractiongeochemical fractionsheavy metalsGulf of CariacoVenezuelasequential extractiongeochemical fractionsheavy metalsGulf of CariacoVenezuelaThe Gulf of Cariaco is a marine ecosystem with high primary productivity, which gives it an ecological and socioeconomic importance. Nevertheless, anthropogenic activities around the Gulf produce wastes that are deposited directly or by runoff into the sediments, and consequently, increases concentrations of metals in this ecosystem. The objective of this study was to determine the distribution of cadmium, copper, lead, manganese, nickel and zinc in geochemical fractions of surface sediments, using modified BCR sequential extraction procedure. The concentrations were measured using flame atomic absorption spectroscopy. In addition, the contents of soluble and exchangeable metals associated to carbonate fractions, determined by BCR, were compared with those determined by the method of Campanella. Samples were collected in 12 stations during June 2007. The applied methodologies were evaluated with a certified reference material of marine sediments (HISS-1) and the results indicated that these methods provide adequate accuracy and precision for the extraction of metals. The total metal concentrations (μg g-1) were, Cd: < limit of detection (LD)-5.0; Pb: 1.79-60.41; Cu: no detected (ND)-42.18; Zn: 25.13-104.57; Mn: 66.31-80.29 and Ni: 3.29-24.58. Cd, Cu, Ni and Pb at several stations, exceeded the Canadian Sediment Quality Guidelines of the Lowest Effect Levels (LEL). Cadmium was identified as being the most mobile of the elements, having the highest concentrations in soluble and exchangeable cations and carbonates. However, Pb, Cu, Mn and Zn levels were found highly associated to organic matter and sulfide fractions. The methods did not show significant statistical differences for the extraction of soluble and exchangeable cations and the metals associated to carbonate fraction. There are several significant correlations between heavy metals, which suggest their common origin.El Golfo de Cariaco es un ecosistema marino con mucha productividad primaria, lo que le confiere especial importancia ecológica y socioeconómica. Sin embargo, los desechos de las actividades antropogénicas son descargados directamente o arrastradas por las escorrentías. El objetivo de este estudio fue determinar la distribución de cadmio, cobre, plomo, manganeso, níquel y zinc en las fracciones geoquímica de los sedimentos superficiales, usando el método modificado de extracción secuencial de la Comunidad Europea (BCR). Las concentraciones de los metales fueron medidas por espectroscopía de absorción atómica. Además, se compararon los contenidos de metales intercambiables y asociados a los carbonatos determinados por el procedimiento BCR modificado con los determinados por el método de Campanella. La recolección de muestras se hizo en 12 estaciones del sector oriental del Golfo de Cariaco, Estado Sucre, específicamente en el sector conocido como el Saco, en junio 2007. Las metodologías aplicadas fueron evaluadas usando un material de referencia certificado de sedimentos marino (HISS - 1). Los resultados indicaron que los métodos proveen exactitud y precisión adecuadas para la extracción de metales. Las concentraciones totales (μg g-1) fueron, Cd: < límite de detección (LD)-5.0; Pb: 1.79- 60.41; Cu: no detectado (ND)-42.18; Zn: 25.13-104.57; Mn: 66.31-80.29 y Ni: 3.29-24.58. Cd, Cu, Ni y Pb excedieron en varias estaciones los límites que pueden afectar la biota, establecidos por la Guía de Evaluación de la Calidad de los Sedimentos de Canadá. El cadmio fue el metal identificado como el más móvil, teniendo las más altas concentraciones como intercambiable y asociado a las fracciones de carbonatos. Sin embargo, Pb, Cu, Mn y Zn mostraron su mayor abundancia en la fracción asociada a materia orgánica y azufre. Los métodos no presentan diferencias significativas para extraer la primera fracción. Se encontraron significantes correlaciones entre los metales pesados que sugieren su origen común.Universidad de Costa Rica2010-10-01info:eu-repo/semantics/publishedVersionArticleartículo originalhttp://purl.org/coar/resource_type/c_2df8fbb1info:eu-repo/semantics/articleapplication/pdfhttps://revistas.ucr.ac.cr/index.php/rbt/article/view/2006210.15517/rbt.v58i0.20062Revista de Biología Tropical; Vol. 58 No. S3 (2010): Volume 58 – Supplement 3 – Octubre 2010: Proceedings on the 34th Scientific Meeting of the Association of Marine Laboratories of the Caribbean (AMLC); 129–140Revista de Biología Tropical; Vol. 58 Núm. S3 (2010): Volume 58 – Suplemento 3 – Octubre 2010: Memorias de la 34ta Reunión Científica de la Asociación de Laboratorios Marinos del Caribe (ALMC); 129–140Revista Biología Tropical; Vol. 58 N.º S3 (2010): Volume 58 – Suplemento 3 – Octubre 2010: Memorias de la 34ta Reunión Científica de la Asociación de Laboratorios Marinos del Caribe (ALMC); 129–1402215-20750034-774410.15517/rbt.v58i0reponame:Portal de Revistas UCRinstname:Universidad de Costa Ricainstacron:UCRspahttps://revistas.ucr.ac.cr/index.php/rbt/article/view/20062/20265Derechos de autor 2010 Revista de Biología Tropicalhttp://creativecommons.org/licenses/by/4.0acceso abiertohttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccess2022-06-06T18:47:30Zoai:portal.ucr.ac.cr:article/20062Portal de revistashttps://revistas.ucr.ac.cr/Universidadhttp://www.ucr.ac.crhttps://revistas.ucr.ac.cr/index.php/index/oaijorge.polanco@ucr.ac.crCosta RicaNo aplicaNo aplicaNo aplicaopendoar:2025-08-13T10:18:44.537Portal de Revistas UCR - Universidad de Costa Ricafalse
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