Accumulation of Copper, Lead, Chrome, Cadmium in Some Tissues of Procambarus clarkii in Rharb Region in Morocco


Different concentrations of four metals namely copper, lead, chrome and cadmium were evaluated in crayfish Procambarus clarkii tissues (carapace, flesh) for a six-month period, from March to August 2013 in the Rharb of Morocco (Lagoon Merja Zerga and Nador canal). The determination of heavy metals was carried using atomic absorption spectroscopy Varian VV20. The results obtained revealed a metal’s contamination of Procambarus clarkii in both sites. Concentrations of heavy metals examined Procambarus clarkii carapace ranged as follows: Merja Zerga (Pb 2.07 - 6.7 μg/g; Cu 2.9 - 9.97 μg/g; Cr 0.89 - 14.22 μg/g dry weight) and Nador canal: (Pb 0.08 - 7.8 μg/g; Cu 3.40 - 9.3 μg/g ; Cr 0.87 - 3.5 μg/g dry weight). Concentrations of heavy metals found in flesh were as follows: Merja Zerga (Pb 0.02 - 5.25 μg/g; Cu 9.58 - 23.59 μg/g; Cr 0 - 2.71 μg/g dry weight) and Nador canal (Pb 0.06 - 6.81 μg/g; Cu 9.5 - 37.20 μg/g; Cr 0 - 3.23 μg/g dry weight). The distribution of those metals in Procambarus clarkii shows high levels of contamination for lead, copper and chrome with an absence of cadmium in both sites (Merja Zerga and Nador canal). The concentrations differed in carapace and flesh.

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El Qoraychy, I. , Fekhaoui, M. , El Abidi, A. , Benakame, R. , Bellaouchou, A. and Yahyaoui, A. (2015) Accumulation of Copper, Lead, Chrome, Cadmium in Some Tissues of Procambarus clarkii in Rharb Region in Morocco. Journal of Geoscience and Environment Protection, 3, 74-81. doi: 10.4236/gep.2015.38008.

Conflicts of Interest

The authors declare no conflicts of interest.


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