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Sbihi, K., Cherifi, O., El gharmali, A., Oudra, B. and Aziz, F. (2012) Accumulation and Toxicological Effects of Cadmium, Copper and Zinc on the Growth and Photosynthesis of the Freshwater Diatom Planothidium lanceolatum (Brébisson) Lange-Bertalot: A Laboratory Study. Journal of Materials and Environmental Science, 3, 497-506.

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

  AUTHORS: Ikram El Qoraychy, Mohamed Fekhaoui, Abdellah El Abidi, Rachid Benakame, Abdelkbir Bellaouchou, Ahmed Yahyaoui

  KEYWORDS: Procambarus clarkii, Heavy Metals, Merja Zerga, Nador Canal, Morocco

  JOURNAL NAME: Journal of Geoscience and Environment Protection, Vol.3 No.8, October 27, 2015

  ABSTRACT: 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.