TEMPORAL FLUXES IN THE PHYSICO-CHEMICAL PROPERTIES OF SOMBREIRO RIVER, SOUTHERN NIGERIA

Title: TEMPORAL FLUXES IN THE PHYSICO-CHEMICAL PROPERTIES OF SOMBREIRO RIVER, SOUTHERN NIGERIA

Author(s): O.A.F. Wokoma and N.Umesi

ABSTRACT

The quality of water is dependent on its intended use however it is influenced by Physico-chemical variables which in turn are affected by spatial and or temporal fluxes. A study was therefore carried out to determine the influence of seasonal variability on the physicochemical properties of Sombreiro River in Southern, Nigeria. Surface water samples were collected across 10 stations over a 24 – month period and analyzed in the laboratory following standard methods. The values obtained respectively for the wet and dry seasons varied from7.56±0.01–7.69±0.02 and 7.63±0.01 – 7.84±0.01 for pH, 4.52±0.07 – 5.44±0.06 and 3.69±0.12 – 5.34±0.08 for DO, 6.35±0.23 – 10.30±0.65 and 4.54±0.35 – 7.94±0.49 for BOD, 5.35±0.26 – 9.85±0.33 and 6.94±0.08 – 10.08±0.38 for THC, 8326.58±398.51 – 12338.17±546.38 and 10487.58±178.95 – 15681.33±399.83 for TDS, 8.40±0.18 – 13.95±0.82 and 6.36±0.22 – 11.12±0.28 for COD, 13687.92±546.48 – 20457.67±584.01 and 17037.58±275.67 – 30642.75±694.83 for EC, 0.28±0.02 – 0.46±0.04 and 0.31±0.03 – 2.38±0.93 for Turbidity, 372.83±13.89 – 801.42±25.68 and 565.50±26.32 – 897.83±22.09 for Sulphate, 5.25±1.01 – 7.24±0.16 and 0.52±0.09 – 3.64±0.80 for Nitrate, 0.21±0.03 – 0.50±0.02 and 0.42±0.02 – 0.74±0.02 for Phosphate and 0.018±0.0 – 0.202±0.05 and 0.024±0.0 – 0.484±0.03 for Ammonia. Two-way analysis of variance comparing the mean values obtained in both wet and dry seasons showed that there was significant difference between seasons in all the parameters investigated at p < 0.05, affirming that physicochemical quality of the study River is season dependent.

Keywords: seasonal variation, surface water, physico-chemical, water quality, wet season
Download PDF

Comments are closed.