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IJSTR >> Volume 2- Issue 5, May 2013 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

Rainwater Quality Assessment In The Tamale Municipality.

[Full Text]



Cobbina, S. J., Michael, K., Salifu, L., Duwiejua, A. B.



Key words: Ghana, Tamale Municipality, Rainwater quality, Major ions, Particulate matter.



Abstract:-The study on the rainwater quality was carried out in Tamale Municipality in Ghana which is poorly endowed with natural water bodies that dries up during the dry season. Rainwater samples were analyzed for pH, turbidity, electrical conductivity and total dissolved solids and major ions (Ca2+, Mg2+, K+, Na+, Cl-, NO3-, H2CO3, CO3, silica and SO42-). pH levels ranged from 5.02 to 9.0 pH units with a mean of 7.18 0.72 pH units. The low pH found in some samples indicates high presence of CO2 in the atmosphere as a result of excessive bush burning within the environs. This can also be attributed to the increased use of fossil fuel which emits high amounts of SO2, NO2 (vehicular movement) and particulate matter (smoke, dust, suspended soot) in the air. Turbidity levels of rainwater during the four year ranged from 0.4 to 12.4 NTU with a mean of 2.62.5 NTU compared to WHO limit of 5 NTU. The high levels of turbidity of rainwater recorded may be due to the presents of particulate matter in the atmospheric air. pH showed good correlation with K+ which indicates that the rampant annual bush burning is the common source of atmospheric pollution in the metropolis. The rainwater quality in the study area is influenced by local activities such as bush burning and particulate matter or dust.



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