Trace elements from the Central Pacific Mexican Shelf: Geochemical associations and anthropogenic influences

A. J. Marmolejo-Rodríguez, A. R. Morales-Blake, I. González-Chavarín, D. Hernández-Becerril, R. Alonso-Rodríguez, M. C. Rodríguez-Palacio, A. Sánchez-González, V. R. Magallanes-Ordóñez

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

© 2016 Elsevier Ltd Baselines for major and trace elements were determined from surface sediment samples from sites located along the Central Pacific Mexican Shelf (CPMS; 16.7–20.45° N). This study area is next to the biggest harbours in Mexico, for example touristic (Puerto Vallarta and Acapulco), touristic and industrial (Manzanillo), and industrial harbours (Lázaro Cárdenas). The industrial harbours have been expanding, transporting tonnes of materials to Asia and North and South America. Oceanographic campaigns were conducted to obtain sediment from depths ranging from 56 to 159 m. The grain size was predominately fine fraction (<63 μm; mean 56 μm ± 30%). More than 50 elements were analysed, and methods were validated with certified reference materials. The results extracted the iron ore signal; enrichment and the association between Fe and Co, Cr, Cu, Mg, Mn, Mo, Ni, V, and Zn were determined for the sediments. Arsenic is enriched in the CPMS; the Normalized Enrichment Factor average (NEFAV) for As is NEFAV= 8 ± 7. However the ratio between As and Cs indicates a natural origin in the most of the sites. Cadmium, Mo, and Ag were significantly correlated with Corgenhanced precipitation of sulfide-reactive metals. Moreover, an anthropogenic influence was detected for Hg (NEFAV= 4.3 ± 1.5) and Ag (NEFAV= 8.5 ± 2.6) in the shelf near the heavily industrialized harbour of Lázaro Cárdenas.
Original languageAmerican English
Pages (from-to)461-470
Number of pages413
JournalEstuarine, Coastal and Shelf Science
DOIs
StatePublished - 5 Nov 2017
Externally publishedYes

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Trace Elements
Ports and harbors
Trace elements
anthropogenic activities
trace elements
trace element
harbor
sediments
Sediments
arsenic
sulfides
cadmium
Iron ores
sediment
Arsenic
Sulfides
Mexico
Cadmium
metals
iron

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Marmolejo-Rodríguez, A. J., Morales-Blake, A. R., González-Chavarín, I., Hernández-Becerril, D., Alonso-Rodríguez, R., Rodríguez-Palacio, M. C., ... Magallanes-Ordóñez, V. R. (2017). Trace elements from the Central Pacific Mexican Shelf: Geochemical associations and anthropogenic influences. Estuarine, Coastal and Shelf Science, 461-470. https://doi.org/10.1016/j.ecss.2016.12.006
Marmolejo-Rodríguez, A. J. ; Morales-Blake, A. R. ; González-Chavarín, I. ; Hernández-Becerril, D. ; Alonso-Rodríguez, R. ; Rodríguez-Palacio, M. C. ; Sánchez-González, A. ; Magallanes-Ordóñez, V. R. / Trace elements from the Central Pacific Mexican Shelf: Geochemical associations and anthropogenic influences. In: Estuarine, Coastal and Shelf Science. 2017 ; pp. 461-470.
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Marmolejo-Rodríguez, AJ, Morales-Blake, AR, González-Chavarín, I, Hernández-Becerril, D, Alonso-Rodríguez, R, Rodríguez-Palacio, MC, Sánchez-González, A & Magallanes-Ordóñez, VR 2017, 'Trace elements from the Central Pacific Mexican Shelf: Geochemical associations and anthropogenic influences', Estuarine, Coastal and Shelf Science, pp. 461-470. https://doi.org/10.1016/j.ecss.2016.12.006

Trace elements from the Central Pacific Mexican Shelf: Geochemical associations and anthropogenic influences. / Marmolejo-Rodríguez, A. J.; Morales-Blake, A. R.; González-Chavarín, I.; Hernández-Becerril, D.; Alonso-Rodríguez, R.; Rodríguez-Palacio, M. C.; Sánchez-González, A.; Magallanes-Ordóñez, V. R.

In: Estuarine, Coastal and Shelf Science, 05.11.2017, p. 461-470.

Research output: Contribution to journalArticle

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T1 - Trace elements from the Central Pacific Mexican Shelf: Geochemical associations and anthropogenic influences

AU - Marmolejo-Rodríguez, A. J.

AU - Morales-Blake, A. R.

AU - González-Chavarín, I.

AU - Hernández-Becerril, D.

AU - Alonso-Rodríguez, R.

AU - Rodríguez-Palacio, M. C.

AU - Sánchez-González, A.

AU - Magallanes-Ordóñez, V. R.

PY - 2017/11/5

Y1 - 2017/11/5

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Marmolejo-Rodríguez AJ, Morales-Blake AR, González-Chavarín I, Hernández-Becerril D, Alonso-Rodríguez R, Rodríguez-Palacio MC et al. Trace elements from the Central Pacific Mexican Shelf: Geochemical associations and anthropogenic influences. Estuarine, Coastal and Shelf Science. 2017 Nov 5;461-470. https://doi.org/10.1016/j.ecss.2016.12.006