Assessment of ground water pollution in the residential areas of Ewekoro and Shagamu due to Cement production
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Date
2011-09
Authors
Oluseyi, T.O.
Olayinka, K.O.
Adeleke, I.
Journal Title
Journal ISSN
Volume Title
Publisher
Academic Journals
Abstract
Chemical and physico-chemical parameters of ground water samples from wells were analyzed by multivariate stastistical tools to provide the characterisation of the ground water distribution of the settlements around cement factories in Ewekoro and Shagamu, Ogun State, Nigeria. The 17 parameters determined include: pH, conductivity, dissolved oxygen (DO), total dissolved solids (TDS), biochemical oxygen demand (BOD), total hardness, acidity and alkalinity; anions such as chlorides, sulphates,phosphates and nitrates as well as potentially toxic metals such as copper, lead, zinc, iron and cadmium. The analytical data were obtained from 6 wells in Ewekoro and 11 wells in Shagamu sampled during three different periods along a year covering both the wet, break and dry seasons of 2009. The concentrations of lead and cadmium are above the World Health Organisation (WHO) standard in all three seasons with lead having as high as 1.05 mg/L and maximum of 0.06mg/L for cadmium. It was also observed that the level of sulphate was higher than the WHO standard during the dry season with a maximum concentration of 623 mg/L. All other physico-chemical parameter fell within the permissible range as stipulated by the WHO. There was no seasonal difference in the concentrations of the potentially toxic metal analysed in the ground water from the two sites, while for the physicochemical properties, there was a seasonal variation in the results of the ground water quality in the two sites studied with DO having a p-value of 0.009, BOD with p-value of 0.04 and alkalinity of 0.044 p-value. An approach for the characterisation of the ground water system of the neighborhood of the cement factories is proper on the basis of its physico chemical composition, in order to detect multivariate patterns for unpolluted waters as well as for eventual polluted zones
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Keywords
Research Subject Categories::NATURAL SCIENCES::Chemistry::Analytical chemistry::Separation methods , Toxic metals , physico-chemical composition , multivariate , cement , ground water
Citation
Oluseyi, T.O., Olayinka, K.O. and Adeleke, I. (2011). Assessment of ground water pollution in the residential areas of Ewekoro and Shagamu due to Cement production. African Journal of Environmental Science and Technology vol. 5(7)