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Abstract
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Article Information:
Assessment of Water Quality and Heavy Metal Levels in Water and Bottom Sediment Samples from Mokwé Lagoon, Accra, Ghana
M.A. Addo, H.A. Affum, B.O. Botwe, J.K. Gbadago, S.A. Acquah, J.K. Senu, T. Adom, A. Coleman, P.S. Adu and I.I. Mumuni
Corresponding Author: H.A. Affum
Submitted: 2011 August, 10
Accepted: 2011 October, 15
Published: 2012 February, 01 |
Abstract:
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The current study deals with the physicochemical characteristics of water samples from the Mokwé
Lagoon in addition to trace heavy metals (Cd, Cr, Ni, Pb and Zn) in the lagoon water and bottom sediments.
The results indicated relatively high ionic content which was reflected in high conductivity, total dissolved
Solids, alkalinity, hardness and chloride levels; and low nutrient content. The trace heavy metal levels in the
lagoon water were found within good range of international guideline limits for natural waters. In contrast, the
metallic levels in the sediment were high. The levels of metal contamination and distribution in the sediment
samples were assessed using geoaccumulation index, enrichment factor, contamination factor and pollution load
factor. The metal index analysis indicated high enrichment of the metals (especially Cr and Ni) which reflected
anthropogenic effects of contamination attributable to several sources. The study calls for constant
environmental monitoring to forestall any heavy metal hazard which could be detrimental to the aquatic
ecosystem of the lagoon.
Key words: Enrichment factor, Mokwe lagoon, nutrients, Pollution Load Index, trace heavy metals, ,
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Cite this Reference:
M.A. Addo, H.A. Affum, B.O. Botwe, J.K. Gbadago, S.A. Acquah, J.K. Senu, T. Adom, A. Coleman, P.S. Adu and I.I. Mumuni, . Assessment of Water Quality and Heavy Metal Levels in Water and Bottom Sediment Samples from Mokwé Lagoon, Accra, Ghana. Research Journal of Environmental and Earth Sciences, (02): 119-130.
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ISSN (Online): 2041-0492
ISSN (Print): 2041-0484 |
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