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Abstract

Heavy Metals Assessment in Water,Sediments and Some Organs of Oreochromis niloticus under the Impact of Sewage Water

The present work, aimed to estimation the physicochemical characters of water and metals Aluminum (Al), Chrome (Cr), Manganese (Mn), Iron (Fe), Cobalt (Co), Nickel (Ni), Copper (Cu), Zinc (Zn), Selenium (Se), Cadmium (Cd) and Lead (Pb) accumulation in sediments and different fish organs (gills, intestine, kidney, liver, muscles, ovary, testis and skin) of Oreochromis niloticus, which collected from sewage water in El-kharja, New Valley, Egypt using inductively coupled plasma mass spectrometry (ICP-MS).
The present study showed that Fe was the highest accumulation level in water, sediments and fish tissue. Metals concentration in water following trend: Fe>Al>Mn>Ni>Zn>Pb>Cr>Se>Cu>Co>Cd. However, metals accumulations in sediments were as follows: Fe>Al>Ni>Mn>Cr>Cu>Zn>Pb>Cd>Se>Co. Also, liver was highest accumulated metals organ, while muscles recorded the lowest concentration of metals. Metals accumulation trend was: Liver>Kidney>Ovary>Intestine>Gills>Testes>Skin>Muscle. In conclusion, the present study revealed that the accumulation of Al, Fe, Mn, Ni and Pb in water were above the permissible limits. However, Al and Fe in muscles were above the permissible limits. This study showed that results of water toxicity tests and metals accumulation in fish may be used together in the water quality assessment.


Author(s):

Ahmed Th A Ibrahim, Ekbal T Wassif and Mariana S Alfons



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