الفهرس 
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Abstract
The study is carried out at 7 stations along Burullus Lake. The parameter determined in water samples that collected seasonally from autumn 2016 to summer 2017 included some physicochemical parameters (water temperature, electrical conductivity, transparence, pH value, oxygen studies, nutrient salts), distribution of heavy metals in water (Fe, Zn, Cd, Cu, Mn and Pb) and investigation of phytoplankton and zooplankton in water.
Fish analysis included the determination of heavy metal accumulation in muscles of fish, histopathological changes in some organs of fish (muscles, liver and ovary) and histochemical investigation of protein in muscles of Oreochromis niloticus fish.
The present study showed that the west of Burullus lake that included (drain7,8,9) was considered the most polluted site because the heavy metal concentrations are high at this site especially during the cold seasons.