Journal of Earth Science & Climatic Change
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The most relevant controls on groundwater quality within the Lower Pra Basin in South-Western Ghana were assessed using
Q-mode hierarchical cluster analysis (HCA). The pattern recognition technique of HCA was employed to characterize
hydrochemical data from a total of sixty-eight (68) boreholes and two (2) streams within the Lower Pra Basin into water groups
and subgroups. A spatial plot of the water groups and subgroups consisting of samples from the basin showed that, majority of
samples in the same group are located in close proximity to one another suggesting that, the same hydrogeochemical processes
and /or flow path are taking place within the aquifer with which the waters are in contact. The high degree of spatial and
statistical coherence suggests that, the changes between the principal hydrochemical facies define the hydrochemical evolution
of groundwater within the basin.
Collins Tay is currently a Ph.D. student at the University of Ghana, Legon and a Senior Research Scientist has been with the Council for Scientific
and Industrial Research-Water Research Institute (CSIR-WRI) since 2001. He has been working at the Environmental Chemistry Division. Born
in Accra in 1969, he attended the Kwame Nkrumah University of Science and Technology (KNUST) and holds a Bachelor of Science (B.Sc.)
degree in Chemistry and a Master of Science (M.S.) degree in Environmental Resources Management. He is a member of the Ghana Science
Association, Research Staff Association of CSIR and currently, the National Vice President. His primary research interests are in the monitoring of
organic pollutants (Pesticides, PAHs, PCBs and TPH) in industrial, urban and agricultural wastewaters/environmental samples, monitoring of heavy/
trace metal pollution in water resources/environmental samples and water quality assessment and monitoring. Mr. Collins Tay has seventeen (17)
scientific publications both in local and international Journals in the areas listed in his research interests. He is currently a reviewer of scientific
articles submitted to the West African Journal of Applied Ecology (WAJAE) and Journal of Ecology and Natural Environment (JENE).
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