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Article Information:
Determination of Heavy Metals in the Black-Chin Tilapia from the Sakumo Lagoon, Ghana
C. Laar, J.R. Fianko, T.T. Akiti, S. Osae and A.K. Brimah
Corresponding Author: Cynthia Laar
Submitted: 2010 August, 24
Accepted: 2010 September, 24
Published: 2011 January, 05 |
Abstract:
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Samples of the Black-chin Tilapia were analyzed for the concentration of heavy metals (Arsenic,
cadmium, chromium, copper, iron, mercury, nickel and zinc) using atomic absorption spectrophotometry and
instrumental neutron activation analysis. The sequence of order of the heavy metals measured in the fish
samples observed from the Sakumo lagoon was as follows: Fe > Cu > Mn> V> Hg > Cd, respectively. The
results showed elevated levels of iron, copper and managanese in all the fish samples although mercury and
cadmium were available in relatively low concentration in the most of the fish samples. Fe, Mn, and Zn
concentration in fish were greater than WHO/FAO certified values. Hazard index < 1 suggests unlikely adverse
health effects whereas HI $ 1 suggests the probability of adverse health effects. Although the heavy metals
analysed in Blackchin Tilapia did not pose any immediate health risk to humans but due to the bioaccumulation
and magnification of these heavy metals in humans, it is essential to safeguard levels of the
metals in the environment.
Key words: Assessment, bioaccumulation, hazard, index, instrumental, spectrophotometry,
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Cite this Reference:
C. Laar, J.R. Fianko, T.T. Akiti, S. Osae and A.K. Brimah, . Determination of Heavy Metals in the Black-Chin Tilapia from the Sakumo Lagoon, Ghana. Research Journal of Environmental and Earth Sciences, (1): 8-13.
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ISSN (Online): 2041-0492
ISSN (Print): 2041-0484 |
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