Spatio-Temporal Variation in Water Quality of Orle River Basin, S.W. Nigeria
The water quality of small streams in Auchi area of Edo State, S.W. Nigeria
was investigated with a view to ascertaining the toxicity levels of the water
and its impact on the human and ecosystems. The study was carried out
between November 1987 and June 1988 at a two weekly intervals for a
period of eight months. The elements investigated include the major cations of Calcium (Ca++), Magnesium (Mg++) Sodium (Na+), Potassium (K+), and hydrogen-ion concentration (pH). Results indicated that Calcium (Ca++), Sodium (Na+) and hydrogen-ion concentration (pH) showed significant variation in the various rock types. Also Calcium (Ca++), Sodium (Na+) and Potassium (K+) showed significant variation with pH. However, Sodium (Na+), Potassium (K+), Magnesium (Mg++) and Hydrogen-ion concentration (pH) showed no definite pattern of variation. This paper focuses on this aspect of Orle River, thus giving baseline information on the temporal and spatial dynamics in the chemical attributes of the basin. This is necessary since the rivers form a major source of drinking water for the communities living within the area. At present, the natives treat the water with alum before use.
Key Words: elements, calcium, magnesium, sodium, potassium.
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