A STUDY OF SOME PHYSICAL AND CHEMICAL PROPERTIES OF THE WATER OF THE TIGRIS RIVER WITHIN THE CITY OF MOSUL, IRAQAbdulmoneim M.A. Kannah and Hiba F.A. ShihabAbstract The Tigris River is the main water resource for the city of Mosul, so the current study was conducted on the Tigris river section within the city of Mosul, which included some physical and chemical properties of the waters of the Tigris River, starting from the Kubba site in the north to the Yarmajah site in the south, and comparing it with international indicators within the river section. The results of the study showed that the water of the Tigris River passing through the city of Mosul ranges from neutral and tilted towards light base, and that the average water temperature ranged between (16.1-16.6) °C, and that the values of electrical conductivity of the river water fall within the average effect of the permissible limits for use Water, and that the waters of the Tigris River fall within the excellent waters according to the turbidity. The results also showed that the water of the Tigris River is well ventilated, as the average values of dissolved oxygen ranged between (8.3-9.3) mg/l and the rates of total dissolved solids values for the water of the Tigris ranged between (167-199) mg/l. The levels of the BOD5 concentrations were within the permissible limits specified by the World Health Organization for drinking water. The results showed that the water of the Tigris River is hard. The ions of nitrates, orthophosphates, sulphates and chlorides showed a variation in their concentrations during the months of the study. The levels of sodium and potassium ions ranged between (19.9-24.6) and (2.6-4.2) mg/l, respectively. The effective silicate levels in the river water reached (5.8-8.5) mg/l, and the alkalinity concentrations in the Tigris water decreased due to the dilution and diffusion factors. |