dor_id: 4121533

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561.#.#.u: https://www.atmosfera.unam.mx/

650.#.4.x: Biología y Química

336.#.#.b: article

336.#.#.3: Artículo de Investigación

336.#.#.a: Artículo

351.#.#.6: https://www.revistascca.unam.mx/rica/index.php/rica/index

351.#.#.b: Revista Internacional de Contaminación Ambiental

351.#.#.a: Artículos

harvesting_group: RevistasUNAM

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270.#.#.d: MX

270.1.#.d: México

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883.#.#.u: https://revistas.unam.mx/catalogo/

883.#.#.a: Revistas UNAM

590.#.#.a: Coordinación de Difusión Cultural

883.#.#.1: https://www.publicaciones.unam.mx/

883.#.#.q: Dirección General de Publicaciones y Fomento Editorial

850.#.#.a: Universidad Nacional Autónoma de México

856.4.0.u: https://www.revistascca.unam.mx/rica/index.php/rica/article/view/RICA.2019.35.03.18/46883

100.1.#.a: Navarrete Forero, Gabriela; Morales Baren, Lady; Dominguez Granda, Luis; Pontón Cevallos, José; Marín Jarrín, José R.

524.#.#.a: Navarrete Forero, Gabriela, et al. (2019). HEAVY METALS CONTAMINATION IN THE GULF OF GUAYAQUIL: EVEN LIMITED DATA REFLECTS ENVIRONMENTAL IMPACTS FROM ANTHROPOGENIC ACTIVITY. Revista Internacional de Contaminación Ambiental; Vol. 35 Núm. 3, 2019; 731-755. Recuperado de https://repositorio.unam.mx/contenidos/4121533

245.1.0.a: HEAVY METALS CONTAMINATION IN THE GULF OF GUAYAQUIL: EVEN LIMITED DATA REFLECTS ENVIRONMENTAL IMPACTS FROM ANTHROPOGENIC ACTIVITY

502.#.#.c: Universidad Nacional Autónoma de México

561.1.#.a: Instituto de Ciencias de la Atmósfera y Cambio Climático, UNAM

264.#.0.c: 2019

264.#.1.c: 2019-07-31

653.#.#.a: cadmium; mercury; lead; mangrove; tropical eastern Pacific; cadmium; mercury; lead; mangrove; tropical eastern Pacific

506.1.#.a: La titularidad de los derechos patrimoniales de esta obra pertenece a las instituciones editoras. Su uso se rige por una licencia Creative Commons BY-NC 4.0 Internacional, https://creativecommons.org/licenses/by-nc/4.0/legalcode.es, para un uso diferente consultar al responsable jurídico del repositorio por medio del correo electrónico claudio.amescua@atmosfera.unam.mx

884.#.#.k: https://www.revistascca.unam.mx/rica/index.php/rica/article/view/RICA.2019.35.03.18

001.#.#.#: 105.oai:ojs.pkp.sfu.ca:article/53058

041.#.7.h: eng

520.3.#.a: The Gulf of Guayaquil, the largest estuary on the Pacific coast of South America, provides livelihoods for fishing communities that supply seafood to national markets. Activities like mining and agriculture are major sources of contamination in the estuary, yet their effects on the ecosystem have not been determined. Publicly-available data were compiled to provide an overview of the level of contamination in water, sediment and seafood in this system. Measured concentrations (Cm) were compared with their corresponding permitted levels (Csl) defined in international regulations. Comparison outcomes were classified using a traffic-light color scale green for ideal conditions (Cm < Csl × 10–1), yellow for alert situations that require precautionary measures (Csl × 10–1 ≤ Cm ≤ Csl × 10), or red for dangerous situations that must be remediated (Cm > Csl × 10). A total of 24 studies were found. Cadmium, mercury and lead were the most commonly analyzed elements. Water samples showed the highest percentage of dangerous levels (> 70 % for Cd, > 80 % for Hg). Extreme concentrations of Hg (1000 times > Csl) were reported for clams (Anadara spp.) and crabs (Ucides occidentalis) collected in the southern zone impacted by gold mining. Studies evidenced the limited use of quality assurance and control procedures on the data-gathering process, resulting in uncertainty. By using orders of magnitude to assess contamination levels, the effects of low precision in the pattern of contamination were reduced. This contribution intends to inform stakeholders about the implications for public health.

773.1.#.t: Revista Internacional de Contaminación Ambiental; Vol. 35 Núm. 3 (2019); 731-755

773.1.#.o: https://www.revistascca.unam.mx/rica/index.php/rica/index

022.#.#.a: ISSN impreso: 0188-4999

310.#.#.a: Trimestral

300.#.#.a: Páginas: 731-755

264.#.1.b: Instituto de Ciencias de la Atmósfera y Cambio Climático, UNAM

doi: https://doi.org/10.20937/RICA.2019.35.03.18

harvesting_date: 2023-11-08 13:10:00.0

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file_creation_date: 2019-08-22 16:32:13.0

file_modification_date: 2019-08-22 16:32:37.0

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245.1.0.b: HEAVY METALS CONTAMINATION IN THE GULF OF GUAYAQUIL: EVEN LIMITED DATA REFLECTS ENVIRONMENTAL IMPACTS FROM ANTHROPOGENIC ACTIVITY

last_modified: 2024-03-19 14:00:00

license_url: https://creativecommons.org/licenses/by-nc/4.0/legalcode.es

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Artículo

HEAVY METALS CONTAMINATION IN THE GULF OF GUAYAQUIL: EVEN LIMITED DATA REFLECTS ENVIRONMENTAL IMPACTS FROM ANTHROPOGENIC ACTIVITY

Navarrete Forero, Gabriela; Morales Baren, Lady; Dominguez Granda, Luis; Pontón Cevallos, José; Marín Jarrín, José R.

Instituto de Ciencias de la Atmósfera y Cambio Climático, UNAM, publicado en Revista Internacional de Contaminación Ambiental, y cosechado de Revistas UNAM

Licencia de uso

Procedencia del contenido

Cita

Navarrete Forero, Gabriela, et al. (2019). HEAVY METALS CONTAMINATION IN THE GULF OF GUAYAQUIL: EVEN LIMITED DATA REFLECTS ENVIRONMENTAL IMPACTS FROM ANTHROPOGENIC ACTIVITY. Revista Internacional de Contaminación Ambiental; Vol. 35 Núm. 3, 2019; 731-755. Recuperado de https://repositorio.unam.mx/contenidos/4121533

Descripción del recurso

Autor(es)
Navarrete Forero, Gabriela; Morales Baren, Lady; Dominguez Granda, Luis; Pontón Cevallos, José; Marín Jarrín, José R.
Tipo
Artículo de Investigación
Área del conocimiento
Biología y Química
Título
HEAVY METALS CONTAMINATION IN THE GULF OF GUAYAQUIL: EVEN LIMITED DATA REFLECTS ENVIRONMENTAL IMPACTS FROM ANTHROPOGENIC ACTIVITY
Fecha
2019-07-31
Resumen
The Gulf of Guayaquil, the largest estuary on the Pacific coast of South America, provides livelihoods for fishing communities that supply seafood to national markets. Activities like mining and agriculture are major sources of contamination in the estuary, yet their effects on the ecosystem have not been determined. Publicly-available data were compiled to provide an overview of the level of contamination in water, sediment and seafood in this system. Measured concentrations (Cm) were compared with their corresponding permitted levels (Csl) defined in international regulations. Comparison outcomes were classified using a traffic-light color scale green for ideal conditions (Cm < Csl × 10–1), yellow for alert situations that require precautionary measures (Csl × 10–1 ≤ Cm ≤ Csl × 10), or red for dangerous situations that must be remediated (Cm > Csl × 10). A total of 24 studies were found. Cadmium, mercury and lead were the most commonly analyzed elements. Water samples showed the highest percentage of dangerous levels (> 70 % for Cd, > 80 % for Hg). Extreme concentrations of Hg (1000 times > Csl) were reported for clams (Anadara spp.) and crabs (Ucides occidentalis) collected in the southern zone impacted by gold mining. Studies evidenced the limited use of quality assurance and control procedures on the data-gathering process, resulting in uncertainty. By using orders of magnitude to assess contamination levels, the effects of low precision in the pattern of contamination were reduced. This contribution intends to inform stakeholders about the implications for public health.
Tema
cadmium; mercury; lead; mangrove; tropical eastern Pacific; cadmium; mercury; lead; mangrove; tropical eastern Pacific
Idioma
eng
ISSN
ISSN impreso: 0188-4999

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