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Egyptian Journal of Chemistry
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Elmorsi, R., Hamed, M., Abou-El-Sherbini, K. (2017). Physicochemical properties of Manzala Lake, Egypt. Egyptian Journal of Chemistry, 60(4), 519-535. doi: 10.21608/ejchem.2017.776.1025
Randa R Elmorsi; Mohamed Hamed; Khaled Abou-El-Sherbini. "Physicochemical properties of Manzala Lake, Egypt". Egyptian Journal of Chemistry, 60, 4, 2017, 519-535. doi: 10.21608/ejchem.2017.776.1025
Elmorsi, R., Hamed, M., Abou-El-Sherbini, K. (2017). 'Physicochemical properties of Manzala Lake, Egypt', Egyptian Journal of Chemistry, 60(4), pp. 519-535. doi: 10.21608/ejchem.2017.776.1025
Elmorsi, R., Hamed, M., Abou-El-Sherbini, K. Physicochemical properties of Manzala Lake, Egypt. Egyptian Journal of Chemistry, 2017; 60(4): 519-535. doi: 10.21608/ejchem.2017.776.1025

Physicochemical properties of Manzala Lake, Egypt

Article 4, Volume 60, Issue 4, August 2017, Page 519-535  XML PDF (2.2 MB)
DOI: 10.21608/ejchem.2017.776.1025
Authors
Randa R Elmorsi email 1; Mohamed Hamed1; Khaled Abou-El-Sherbini2
1National Institute of Oceanography and Fisheries
2National Research Centre
Receive Date: 19 March 2017,  Revise Date: 19 April 2017,  Accept Date: 24 April 2017 
Abstract
Physicochemical parameters such as temperature, total dissolved solid (TDS), pH, salinity, dissolved oxygen (DO), biological oxygen demand (BOD), permanganate index (PI), chloride and nutrient salts were measured in water samples, collected from 12 sites of Manzala Lake during winter and summer, 2015. A lot of fluctuations were observed in these parameters affected by the poor connection of water body of the lake and the diversity of the incoming flows. The pH values of water were alkaline throughout the lake and closely correlated with widely varied salinity and DO values. BOD increases in the south eastern-located sites affected mostly by Bahr El Baqur drain effluents especially during winter during the scheduled water block. PI was highly influenced by the agricultural and domestic waste effluents. Nutrients salts ranged between 5.47-249, 2.61-15.1, 0.64-24.5, and 3.47-22.9 µmol L-1 for ammonia, nitrite, nitrate and phosphate, respectively. N/P ratios (2.28-12.8) in the present study indicated that nitrogen is the limiting factor for phytoplankton fluorination except for some sites in the south eastern region. The levels of total polycyclic aromatic hydrocarbons were found affected by the seawater inflows during winter. It can be concluded from obtained data that the south eastern region showed worst water quality parameters.
Keywords
Brackish water; nutrients; physicochemical parameters; total polyaromatic hydrocarbons
Main Subjects
Environmental chemistry
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