Determination of Monthly Changes in Some Water Properties of Lake Sureat

In this research, the concentrations of some properties of the water of Lake Sureat were determined during a whole year, such as temperature, pH, electrical conductivity, oxidation and reduction potential, and Polycyclic Aromatic Hydrocarbons (PAHs) to evaluate the possibility of using it for human consumption. Therefore, in this research, water samples were collected from Sureat Lake during the whole year, and extracted and studied quantitatively and qualitatively using the technology of gas chromatography/ spectrometry mass (GC-MS) in order to determine the PAHs concentrations during the seasons of the year. The results showed that the temperature, pH, electrical conductivity, oxidation and reduction potential were within the permissible limits for drinking water, while the total concentrations of PAHs were greater than the permissible value in drinking water sources. They were high in winter, their values were 550.6 ng/L. ∑PAHs recorded a low value in the summer, it was 308.47 ng/L. PAHs with low molecular weights (3-4 rings) were dominant in the water samples during the study seasons, which poses a threat to human life.