Physical and Chemical Characteristics of the Lower Sombreiro River, Niger Delta, Nigeria
6 Pages Posted: 13 Jul 2018
Date Written: June 23, 2018
Physico-chemical parameters are vital indicators of water quality in aquatic ecosystems, and also influences the diversity and, or abundance of living organisms a water body can support. It is in the light of this that an investigation into the physicochemical characteristics of the lower Sombreiro River was carried out from April, 2012 to March, 2014. Surface water temperature was measured in-situ and samples were collected in replicates across ten stations for laboratory analysis based on standard methods. While Temperature varied from 25- 320C, the mean concentration of physicochemical parameters of other parameters varied from 7.51±0.02 – 7.90±0.02 (pH), 3.22±0.02 – 6.42±0.02mg/l (dissolved oxygen), 2.38±0.01 – 13.64±0.02mg/l (biochemical oxygen demand), 11.78±0.06 – 18.72±0.07mg/l (salinity), 10357.5±142.5 - 33373±218.0mg/l (electrical conductivity), 6785±3.5 - 17098±2.0mg/l (total dissolved solids), 4.12±0.02 - 12.84±0.02mg/l (total suspended solids), 0.18±0 – 7.10±0NTU (turbidity), 0.11±0 – 0.80±0mg/l (phosphate), 4054.05±0.06 – 12157.5±0.01mg/l (chloride), 0.01±0 – 0.58±0.07mg/l (ammonia), 309±7.0 - 988±8.0mg/l (sulphate), 0.05±0 – 7.75±0mg/l (nitrate) and 2.55±0.13 – 11.6±0.03mg/l (total hydrocarbon content). Mean heavy metal concentrations varied from 0.017±0.02 – 0.423±0.038mg/l for iron, 0.008±0.004 – 0.596±0.018mg/l for nickel, 0.016±0.005 - 0.382±0.218mg/l for chromium, 0.014±0.002 – 0.336±0.261mg/l for copper, 0.001±0 – 0.018±0.01mg/l for cadmium, 0.007±0.006 – 0.244±0.157mg/l for zinc and 0.001±0 – 0.214±0.104mg/l for lead. The concentration of some physicochemical parameters calls for concern, as they pose a potential health risk.
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