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Articles by I.I. Balogun
Total Records ( 2 ) for I.I. Balogun
  A.O. Ayeni and I.I. Balogun
  Heavy metals have high significance among the inorganic contaminants of surface water (e.g., ponds and streams) due to their non-degradable nature in heighten injurious biological effect. For this reason, therefore, this study examined the influence of the land-uses on the performance of the selected heavy metals using z-score and coefficient of variation. In order to achieve the aim of this study, thirty surface ponds water were sampled across four land uses in Akoko Northeast LGA of Ondo State, Nigeria. The sampled water were assessed for four heavy metals and evaluated using the Z-score and coefficient of variation. The heavy metals are zinc (Zn), iron (Fe), manganese (Mn) and copper (Cu) while the land uses comprise of built-up areas, cultivated lands, vegetation and crop plantation. Observed heavy metals results were converted to standardized Z-scores (z) to facilitate objective comparisons and enablement of performance among each parameter in the ponds across the land uses. The predefined water quality result variations were objectively subjected to coefficient of variation (CV) to confirm the level of parameters comparability. Thus, the z-score results of heavy metals identified strong remarkable spatial dependency when p>0.01 or weak remarkable spatial dependency when p<0.01 while performance denote homogeneous when CV<50% or heterogeneous when CV>50%. In conclusion, the study exhibited spatial variation in concentrations of the four heavy metals as a result of different land uses characteristic.
  A.O. Ayeni , I.I. Balogun and A.S.O. Soneye
  This study assessed the seasonal surface water quality of River Ala upstream Akure-Nigeria. This was necessitated by the peoples' consideration of water from rivers as substitute to the reigning incidence of water shortage in the downstream of the river. Six locations were chosen spatially within the urban built-up to reflect a consideration of all possible human activities that are capable of changing the quality of river water. Water samples were collected for a period of 12 months. The water samples collected were analyzed for physico-chemical parameters which include pH, total dissolved solids, dissolved oxygen, biochemical oxygen demand, total hardness, calcium, magnesium, chlorine, nitrate, iron and zinc using standard procedures. For spatial reference the location of sampling points were determined with GPS and interpolated on digitized topographical map sheets of the study area. The observed results of the laboratory analysis were then presented, described and compared descriptively with the international standards for drinking water. It was observed that variation exists in the quality of the sampled waters and impaired to different degrees using WHO drinking water standards for the selected parameters. The results of the correlation coefficient shows that inverse or direct relationship exist between some parameters for instance, there is inverse relationship between pH and DO at 95% confidence level during the rainy season while Ca+ has direct relationship with Mg and Cl¯ 95%. Therefore, considering the level of impairments of Ala River in Akure-Nigeria, water is unsafe for domestic purposes and it continuous use prognosticate health danger to the residents.
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