Environmental condition of sediment in the eastern sector of Cariaco Gulf
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| Formato: | Online |
| Idioma: | spa |
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Universidad Nacional, Costa Rica.
2021
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| Acceso en línea: | https://www.revistas.una.ac.cr/index.php/revmar/article/view/15466 |
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REVMAR15466 |
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ojs |
| institution |
Universidad Nacional de Costa Rica |
| collection |
Revista Ciencias Marinas y Costeras |
| language |
spa |
| format |
Online |
| author |
Fuentes-Hernández, María Valentina |
| spellingShingle |
Fuentes-Hernández, María Valentina Environmental condition of sediment in the eastern sector of Cariaco Gulf |
| author_facet |
Fuentes-Hernández, María Valentina |
| author_sort |
Fuentes-Hernández, María Valentina |
| title |
Environmental condition of sediment in the eastern sector of Cariaco Gulf |
| title_short |
Environmental condition of sediment in the eastern sector of Cariaco Gulf |
| title_full |
Environmental condition of sediment in the eastern sector of Cariaco Gulf |
| title_fullStr |
Environmental condition of sediment in the eastern sector of Cariaco Gulf |
| title_full_unstemmed |
Environmental condition of sediment in the eastern sector of Cariaco Gulf |
| title_sort |
environmental condition of sediment in the eastern sector of cariaco gulf |
| title_alt |
Condición ambiental del sedimento del sector oriental del golfo de Cariaco Condição ambiental do sedimento do setor oriental do golfo de Cariaco |
| publisher |
Universidad Nacional, Costa Rica. |
| publishDate |
2021 |
| url |
https://www.revistas.una.ac.cr/index.php/revmar/article/view/15466 |
| work_keys_str_mv |
AT fuenteshernandezmariavalentina environmentalconditionofsedimentintheeasternsectorofcariacogulf AT fuenteshernandezmariavalentina condicionambientaldelsedimentodelsectororientaldelgolfodecariaco AT fuenteshernandezmariavalentina condicaoambientaldosedimentodosetororientaldogolfodecariaco |
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1805401734179192832 |
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REVMAR154662022-06-10T14:45:55Z Environmental condition of sediment in the eastern sector of Cariaco Gulf Condición ambiental del sedimento del sector oriental del golfo de Cariaco Condição ambiental do sedimento do setor oriental do golfo de Cariaco Fuentes-Hernández, María Valentina Sediment water toxins environmental risk Venezuela Agua riesgo ambiental sedimento tóxicos Venezuela Água risco ambiental sedimento tóxicos Venezuela In 2008, the environmental status of sediment in the eastern region of the Gulf of Cariaco (Venezuela) was evaluated by comparing chemical concentrations of trace metals and polycyclic aromatic hydrocarbons (PAHs) to responses to standardized toxicological tests. In April, the metals partitioned in the sediment and retained water were extracted and measured using ICP-OES analysis. The PAHs were separated from the sediment using ultrasound and measured with HPLC-fluorescence detectors. In addition, Artemia survival was evaluated and hemolytic activity tests were performed. The total metal concentrations (μg g-1) were: Cu (29-91), Cd (1.9-4.9), Cr (4-36), Ni (10-33), Pb (3-9) and Zn (32-112). Results of the analysis of water (µg L-1) were Pb (33-56), Cr and (154-237). The concentrations of PAHs (3-5 rings) were low, with a predominance of fluoranthene (22-71 ng g-1), mainly pyrolytic. Concentrations of Cu, Ni and Cd in the sediment exceeded quality criteria in only a few locations. There was no mortality of larvae during toxicological tests and hemolytic activity was less than 2%. These results show that the sediments analyzed have high ecological quality En 2008, se evaluó la condición ambiental del sedimento de la región oriental del golfo de Cariaco (Venezuela) al relacionar las concentraciones químicas de metales traza e hidrocarburos policíclicos aromáticos (HAP) con las respuestas a pruebas toxicológicas estandarizadas. Para ello, en abril, los metales particionados en el sedimento y en el agua retenida fueron extraídos y medidos con ICP-OES. Los HAP fueron separados del sedimento con ultrasonido y medidos con HPLC-fluorescencia. Además, se ejecutaron pruebas de supervivencia de Artemia y actividad hemolítica. Las concentraciones de metales totales (µg g-1) fueron: Cu (29-91), Cd (1.9-4.9), Cr (4-36 ), Ni (10-33), Pb (3-9) y Zn (32-112). En el agua fueron detectados, en µg L-1: Pb (33-56) y Cr (154-237). Las concentraciones de HAP (3-5 anillos) fueron bajas, con predominio de fluoranteno (22-71 ng g-1), en particular, pirolítico. Solamente, en algunas localidades, las concentraciones de Cu, Ni y Cd del sedimento superaron los criterios de calidad. No hubo mortandad de larvas durante las pruebas toxicológicas y la actividad hemolítica fue menor que 2%. Una vez realizado el contraste se demuestra que los sedimentos tienen alta calidad ecológica. Em 2008, foi avaliada a condição ambiental do sedimento da região oriental do golfo de Cariaco (Venezuela) ao relacionar as concentrações químicas de metais-traços e hidrocarbonetos policíclicos aromáticos (HAP) com as respostas dos testes toxicológicos padronizados. Para isso, em abril, os metais particionados no sedimento e na água retida foram extraídos e medidos com ICP-OES. Os HAPs foram separados do sedimento com ultrassom e medidos com HPLC-fluorescência. Além disso, foram executados testes de sobrevivência de Artemia e atividade hemolítica. As concentrações de metais totais (µg g-1) foram: Cu (29-91), Cd (1,9-4,9), Cr (4-36), Ni (10-33), Pb (3-9) e Zn (32-112). Na água foram detectadas em µg L-1: Pb (33-56) e Cr (154-237). As concentrações de HAP (3-5 anéis) foram baixas, com predomínio de fluoranteno (22-71 ng g-1), particularmente, pirolítico. Somente em algumas localidades, as concentrações de Cu, Ni e Cd do sedimento superaram os critérios de qualidade. Não houve morticínio de larvas durante os testes toxicológicos e a atividade hemolítica foi menor a 2%. Assim que o contraste foi realizado, ficou demonstrado que os sedimentos têm alta qualidade ecológica. Universidad Nacional, Costa Rica. 2021-04-23 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed article Artículo evaluado por pares Artigo revisto por pares application/pdf text/html application/epub+zip audio/mpeg https://www.revistas.una.ac.cr/index.php/revmar/article/view/15466 10.15359/revmar.13-1.4 Journal of Marine and Coastal Sciences; Vol. 13, Núm. 1 (2021): (January-June); 57-76 Revista Ciencias Marinas y Costeras; Vol. 13, Núm. 1 (2021): (enero-junio); 57-76 Revista Ciencias Marinas y Costeras; Vol. 13, Núm. 1 (2021): (janeiro-junho); 57-76 1659-407X 1659-455X spa https://www.revistas.una.ac.cr/index.php/revmar/article/view/15466/21641 https://www.revistas.una.ac.cr/index.php/revmar/article/view/15466/21642 https://www.revistas.una.ac.cr/index.php/revmar/article/view/15466/21643 https://www.revistas.una.ac.cr/index.php/revmar/article/view/15466/21890 |