Chemical Evaluation for western coast of Mediterranean Sea in Egypt

PH, dissolved oxygen, oxidizable organic matter, as well as nutrient salts [NH4, NO2, NO3, PO4, and SiO4] were studied in the water of western coast of the Mediterranean Sea in Egypt [west of Alexandria] at different depths ranging from 0-200 m depth for inshore and offshore stations during winter [31 January to 5 February] and summer [3-10 September], 2006. During the last three decades, many touristic cities were constructed along the study coastal area. These coastal areas are exhibiting sings of stress, population pressures, and coastal development may lead to: declining fisheries, proliferation of harmful algal blooms nourished by sewage and agricultural run off close to beaches harming fish and causing health problems. Thus, this paper aimed to assess the eutrophication level in the study area

Some chemical and physical characteristics of Alexandria coastal water, Egypt

Seasonal collection of water samples were carried out at Alexandria coast from 18 selected stations during 2004 - 2005. The study area was divided into three sections A, B, and C. The study areas A and C are clearly affected by brackish polluted water discharge from El-Ammia, Rakta, Bughas, Umum, and Noubaria drains which were studied too. The hydrographic parameters [pH, DO, salinity, and OOM] were studied. This work aimed at evaluating some major ions level [average of 434.6 mg/l, 1.39 g/l, 3.11g/l, and 67.32 mg/l for Ca, Mg, SO[4], and Br in surface water and 449.12 mg/l, 1.48g/l, 3.42 g/l, and 75.68 mg/l in bottom water, respectively] in Alexandria coastal water and their chlorinity ratios relevant to the corresponding normal oceanic ones. The influence of dilution effect resulted from the discharge of different types and amount of land-based effluents was discussed. By all, the average chlorinity ratios of cations deviations from the respective oceanic values can detect as a resulting from the discharging of land -based effluents; [average of 0.074, 0.023, 0.004, and 0.172 for Mg/CI, Ca/CI, Br/CI and SO[4]/CI, respectively]. The correlation coefficients between the major cations and the hydrographic parameters were computed and discussed

Impact of drainage effluents on the water quality of Abu-Qir Bay, Alexandria, Egypt

Abu-Qir Bay, a semi-enclosed heavily polluted Mediterranean basin in Egypt, is receiving huge amounts of untreated sewage, industrial, and agricultural waste waters via three land-based sources: Tabia pumping station [TPS], Outlet of lake Edku [Boughaz El-Maadiya], and Rosseta mouth of River Nile. In order to mitigate and control the impact of pollution on coastal and marine resources, it is essential that the type and load of pollutants be identified. So water samples were collected from sixteen stations covering Abu-Qir Bay, seven stations covering Lake Edku, one sample from El-Ammia Drain [TPS], and eight samples from the drains affected or entering lake Edku during April and May 2005. The hydrochemical parameters, i.e., water temperature, chlorosity, salinity, dissolved oxygen pH, total suspended matter, oxidizable organic matter, calcium, and magnesium as well as nutrient salts: the nitrogen forms [ammonium, nitrite, and nitrate], the reactive phosphate and reactive silicate were investigated