PRELIMINARY STUDY OF HYDROCHEMISTRY OF ELEYELE LAKE AND ITS TRIBUTRIES, IBADAN, NIGERIA
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Date
2011
Journal Title
Journal ISSN
Volume Title
Publisher
Faculty of Science, Adamawa State University, Nigeria
Abstract
Hydrochemical evaluation and distribution of major and trace metals in water of Eleyele
Lake and its feeding streams (tributaries) within Ibadan, south-western Nigeria is presented
in respect of anthropogenic and geogenic contaminations from the surrounding catchments.
The aim of the study is to delineate the degree of concentration of metals in the water phase.
ICP-OES method was used for the hydrochemical analysis. The results revealed no practical
contamination of these metals in terms of its domestic usability in both the tributaries and the
main Lake because the values are below W.H.O. standard for potable water. The AF values
are less than 1 and the Igeo- values less than 0. However, the average values of Sodium
Absorption Ratio (SAR) recorded in the feeding stream (tributaries) is 10.6 and 5.9 in the
main Lake. This is an indication of potential problem for irrigation water. Furthermore, the
major metals have good correlation coefficient values (>0.6) with one another. This shows
their close associations and could be attributed to their geogenic sources from the
catchments’ bedrock. Some of the trace metals show negative correlation with the major
metals, TDS and the EC. This reflects different sources and controlling processes. The water
is suitable for domestic purposes rather than Agriculture because of the Na
+
level
contamination as revealed by the SAR value
Description
Keywords
Hydrochemistry, Physicochemical parameters, Major metals, SAR, Trace Elements