title: Monitoring of seasonal variation in the water quality of Ubu river in Ekwusigo and Nnewi local government areas of Anambra State, Nigeria.
abstract: Investigation of the water quality of the Ubu river has been carried out. The upstream course of the river is slightly acidic (pH 5.45 +/- 0.23), and the acidity decreases along the lower courses of the river. Turbidity, surfactant, and iron content parameters of the river increased during the wet season, and these changes have been attributed to inputs from flood, leachates of soil erosion, and storm water runoff discharged into the river in increased quantities during the season. Concentrations of some metals were found to increase during the dry season because of absence of dilution of the river by storm water runoff. Most water quality parameters are within World Health Organization acceptable limits set for potable water, and they include most of the cationic and anionic constituents. Although there is no hydrocarbon or metal ion pollution, potability is reduced along the mid to downstream courses of the river by unacceptable levels of turbidity, surfactant concentration, and iron content, particularly during the wet season.
authors.affiliation: Department of Pure and Industrial Chemistry, University of Port Harcourt, PMB 5323 Choba, Port Harcourt, Nigeria. uzoukwupob331@yahoo.co.uk
authors.forename: Bieluonwu A
authors.initials: BA
authors.lastname: Uzoukwu
authors.forename: Chibuike
authors.initials: C
authors.lastname: Ngoka
authors.forename: Nkemjika
authors.initials: N
authors.lastname: Nneji
mesh_terms: D004784:Environmental Monitoring; D009549:Nigeria; D011786:Quality Control; D012016:Reference Values; D045483:Rivers; D012621:Seasons; D014872:Water Movements; D014873:Water Pollutants / Q000032:analysis*; D014944:World Health Organization
chemical_list: D014873:Water Pollutants