Distribution of heavy metals in marine sediments of Tetouan coast (North of Morocco): natural and anthropogenic sources

Omar, M. Ben; Mendiguchı́a, Carolina; Er-Raioui, Hassan; Marhraoui, Mohammed; Lafraoui, Ghizlane; Oulad-Abdellah, Mohammed K.; Garcı́a-Vargas, Manuel; Moreno, Carlos

doi:10.1007/s12665-015-4494-4

Cited by 46 publications

(9 citation statements)

References 46 publications

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“…In general, the average values of Cd, Zn, and Pb are much higher than background shale [27] and continental crust and from other coastal areas (Table 5). Generally, the concentration of these elements was all higher in the estuary of the Meliane river and lower in the offshore.…”

Section: Total Trace Metals Total Trace Metals Composition Of Surfacmentioning

confidence: 89%

Bioavailability and Assessment of Metal Contamination in Surface Sediments of Rades-Hamam Lif Coast, around Meliane River (Gulf of Tunis, Tunisia, Mediterranean Sea)

Amor

Yahyaoui²,

Abidi

et al. 2019

Journal of Chemistry

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The total concentration and the speciation of heavy metals (Pb, Cd, Cu, Zn, Ni, and Cr) in surface sediments of Rades-Hamam Lif coast were determined, with particular focus on the effect that urban and industrial waste in the Meliane river has on the estuary and coastal surface sediments of the Rades-Hamam Lif coast, off the Mediterranean Sea. Several geochemical indices were applied to assess the risk of contamination and the environmental risks of heavy metals on surface sediments. The total concentrations of these heavy metals are influenced by runoff, industrial, and urban wastewater. The Cd, Pb, Zn, and Ni are affected by anthropogenic sources, especially at the mouth of the Meliane river. The sequential extraction of Cd was presented dominantly in the exchangeable fraction and thus the high potential bioavailability. In contrast, Cr and Cu were mostly bound to the residual fraction indicating their low toxicity and bioavailability. The order of migration and transformation sequence was Cd > Pb > Ni > Zn > Cr > Cu, and the degree of pollution was Cd > Pb > Ni > Zn > Cr > Cu.

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Section: Total Trace Metals Total Trace Metals Composition Of Surfacmentioning

confidence: 89%

Bioavailability and Assessment of Metal Contamination in Surface Sediments of Rades-Hamam Lif Coast, around Meliane River (Gulf of Tunis, Tunisia, Mediterranean Sea)

Amor

Yahyaoui²,

Abidi

et al. 2019

Journal of Chemistry

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“…The annual average precipitation in between 2.8-and 22.3-mm year −1 was recorded considering the subtropical and tropical climatic conditions with erratic rainfall and extreme evaporation rate [27,28]. The oceanography conditions have very high temperatures over 45°C and wind flow usually showed north to north-northwest direction during all times of the year in this area [29]. The Red Sea is one of the most saline areas across the world.…”

Section: Study Sitementioning

confidence: 99%

Assessment of heavy metal contamination in water, sediments, and Mangrove plant of Al-Budhai region, Red Sea Coast, Kingdom of Saudi Arabia

Al-Mur

2021

Journal of Taibah University for Science

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This study investigates the hydrographic parameters and contamination status of zinc (Zn), iron (Fe), copper (Cu), manganese (Mn), lead (Pb), cadmium (Cd), vanadium (V), and nickel (Ni), etc. in surface water, surficial sediments, and mangrove tree tissues (Avicennia marina). Samples were collected from nine sites in Al-Budhai area of Red Sea coast of Jeddah. The trend values of metal contamination factor were Ni (3.23) > Cd (2.99) > Pb (2.86) > Zn (2.69). Translocation factor (TF) of the metals showed Avicennia marina tissues have a dominant role in the phytoremediation process through toxic metal uptake.

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“…Main subject of previous studies on heavy metals was sediments (e.g. [30,35,39]) as well as mussels and other molluscs [3,6,28,29]. In addition, different Moroccan fish species were analyzed for various contaminants [1,4,8,43].…”

Section: Introductionmentioning

confidence: 99%

Heavy metal contamination in European conger (Conger conger, Linnaeus 1758) along the coastline of Morocco

et al. 2022

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Background In Morocco, fish is an important protein source especially, even not exclusively, for coastal communities and marketed fresh all along the coastline. One of the main targets of coastal artisanal fisheries is the European conger (Conger conger, Linnaeus 1758), a widely distributed benthic predatory species of a maximum weight of up to 50 kg. However, information on heavy metal contamination of conger is scarce. Therefore, concentrations of mercury, lead and cadmium were analysed in 108 European conger specimens from nine locations along the along the Atlantic and Mediterranean coasts of Morocco to describe the spatial distribution of heavy metal contamination. Results The average heavy metal concentration in all conger samples under investigation was 246.90 ± 216.83 µg mercury/kg wet mass, 74.14 ± 87.02 µg lead/kg wet mass and 255.12 ± 287.15 µg cadmium/kg wet mass respectively. Mercury and cadmium showed a clear site-specific bioaccumulation in European conger but lead does not. Hence, the effect of fish length bias on contamination was corrected through a generalized linear model (GLM) prior to any spatial comparison. Conclusions Different regional hotspots for the three analysed metals are identified and local sources are discussed. Mercury levels in big specimens of European conger exceeded the European threshold level for human consumption at some of the locations under investigation.

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Distribution of heavy metals in marine sediments of Tetouan coast (North of Morocco): natural and anthropogenic sources

Cited by 46 publications

References 46 publications

Bioavailability and Assessment of Metal Contamination in Surface Sediments of Rades-Hamam Lif Coast, around Meliane River (Gulf of Tunis, Tunisia, Mediterranean Sea)

Bioavailability and Assessment of Metal Contamination in Surface Sediments of Rades-Hamam Lif Coast, around Meliane River (Gulf of Tunis, Tunisia, Mediterranean Sea)

Assessment of heavy metal contamination in water, sediments, and Mangrove plant of Al-Budhai region, Red Sea Coast, Kingdom of Saudi Arabia

Heavy metal contamination in European conger (Conger conger, Linnaeus 1758) along the coastline of Morocco

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