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Assessment of metallic contamination in sediment and mullet fish (Mugil cephalus Linnaeus, 1758) tissues from the East Algerian coast

Abstract

The present work was designed to assess the contamination level in the coastal of Annaba, following the spectrophotometric determination of the level of some metallic elements (Fe, Cu, Pb, Zn, Ni and Cd) in the sediments along an increasing bathymetric gradient (10 m and 20 m), as well as in the biological indicator grey mullet (Mugil cephalus) muscle. During the winter period (2014), 12 surface sediment samples, and a total of 24 fish were collected. Once the samples are dried, crushed and sieved, 0.5 g dry weight of each sample was added to concentrated acids. The results showed that the levels of some metals are superior to the recommended guideline values, and consequently the sediment of this bay is contaminated by iron, lead and copper. The contamination index (CI) showed a general tendency in the concentration of the studied metals as follows: Fe > Pb > Cu > Zn > Ni > Cd, since the most studied metals occurred at higher concentration in depth (20 m).

However, the average concentrations of metals in fishes were found to be as the following order: Fe > Zn > Pb > Cu > Ni > Cd. The consumption of fish from some contaminated sites can be dangerous because concentrations of lead, cadmium and zinc exceed the international standards. Moreover, the strong positive correlation observed between the metallic elements of sediments and fishes confirm that these metals resulted from the similar sources of the anthropic activities, such as domestic, port, industrial and agricultural waste discharges. This is confirmed by the determined of pollution load index (PLI) parameter. Conclusively, a regular monitoring program of heavy metal is recommended for protecting these organisms, and to reduce the environmental risks.

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Contribution to flood risk management by the IRIP method at the level of Gareat El Taref catchment, Constantine’s highlands, North-East of Algeria

rain–flow by hydrological modelling software system HEC-HMS – watershed’s case of wadi Cheliff-Ghrib, Algeria. Journal of Water and Land Development. No. 30 p. 87–100. DOI 10.1515/jwld-2016-0025. N ouaceur Z., L aignel B., T urki I. 2013. Changements climatiques au Maghreb : vers des conditions plus humides et plus chaudes sur le littoral algérien? [Climate change in the Maghreb: towards wetter and warmer conditions on the Algerian coast?]. Géographie Physique et Environnement. Vol. 7. No. 1 p. 307–323. R emenieras G. 1976. L’hydrologie de l

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Drought and water mobilization in semi-arid zone: The example of Hammam Boughrara dam (North-West of Algeria)

des conditions plus humides et plus chaudes sur le littoral algérien [Climate change in the Maghreb: Towards wetter and warmer conditions on the Algerian coast]. Géographie Physique et Environnement. Vol. 7 p. 307–323. DOI 10.4000/physio-geo.3686. P arde M 1946. La sécheresse 1941–1945 [The drought of 1941–1945]. Annales de l’Université de Grenoble (France). Vol. 22. No. 3 p. 99–103. P ita M.F 2000. Un nouvel indice de sécheresse pour les domaines méditerranéens. Application au bassin de Guadalquivir (Sud-Ouest de l’Espagne) [A new drought index for

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Possibilities and limitations of using Lemna minor, Hydrocharis morsus-ranae and Ceratophyllum demersum in removing metals with contaminated water

. No. 65 p. 1027–1039. O barska -P empkowiak H., K ołecka K., B uchholtz K., G ajewska M. 2015. Ekoinżynieria w zintegrowanym odwadnianiu i stabilizacji osadów ściekowych w systemach trzcinowych [Ecoengineering of integrated dewatering and stabilization of sewage sludge in reed systems]. Przemysł Chemiczny. No. 94(12) p. 2299–2303. O uali N., B elabed B.E., Z eghdoudi F., R achedi M. 2018. Assessment of metallic contamination in sediment and mullet fish ( Mugil cephalus Linnaeus, 1758) tissues from the East Algerian coast. Journal of Water and

Open access