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Abstract
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Article Information:
Pollutional Status of Kubanni Lake Through Metal Concentrations in Water and Sediment Columns, Zaria - Nigeria
J.A. Adakole and D.S. Abolude
Corresponding Author: J.A. Adakole
Submitted: December 20, 2011
Accepted: January 26, 2012
Published: April 15, 2012 |
Abstract:
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The aim of this study is to evaluate the level of pollution of kubanni lake. Concentrations of some
metals in water and sediment columns of Kubanni lake were investigated for a 2 year period (2002-2004).
Samplings were done monthly at 5 different sites. The concentrations of the metals were determined using
atomic absorption spectrophotometer. The pH fluctuated between acidity (6.50) and alkalinity (9.0). The mean
temperature, electrical conductivity, dissolved oxygen and hardness are: 24.97±.29ºC, 69.20±0.72 μ/cm,
07.25±0.05 mg/ and 124.77±8.11 mg/. CaO3, respectively. Mg, Ca, Pb, Co, Cd and Cr were detected in all the
water samples with means of 1.47±.08, 9.21±0.52, 1.220.05, 1.26±0.05, 0.02±0.01 and 0.86±0.04 mg/L
respectively. The dry season means of Mg, Ca and Pb were higher than the rainy season means while a reverse
trend was observed for Co and Cr. The sediment metal concentrations correlated positively with the water metal
concentrations. The detection of Pb and Cd in Kubanni lake indicates the contamination of the lake’s water by
human activity. The concentrations of Cr, Cd and Pb in both sediments and water were above WHO
recommended limits. Also, the Ca: Mg ratio obtained for Kubanni lake water is 6:1, indicating Mg deficiency
of the lake’s water. Consequently, the lake water is not suitable for irrigational purposes in terms of Ca: Mg
ratio.
Key words: Ca: Mg ratio, effluents, lake, metals, permissible-limit, ,
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Abstract
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Cite this Reference:
J.A. Adakole and D.S. Abolude, . Pollutional Status of Kubanni Lake Through Metal Concentrations in Water and Sediment Columns, Zaria - Nigeria. Research Journal of Environmental and Earth Sciences, (04): 424-427.
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ISSN (Online): 2041-0492
ISSN (Print): 2041-0484 |
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