TITLE

BIOACCUMULATION OF SOME HEAVY METALS OF SIX FRESH WATER FISHES CAUGHT FROM LAKE CHAD IN DORON BUHARI, MAIDUGURI, BORNO STATE, NIGERIA

AUTHOR(S)
Akan, J. C.; Abdulrahman, F. I.; Sodipo, O. A.; Akandu, P. I.
PUB. DATE
May 2009
SOURCE
Journal of Applied Sciences in Environmental Sanitation;2009, Vol. 4 Issue 2, p103
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Six species of fishes (Tilapia zilli, Clarias anguillaris, Protoptenus, Oreochromis niloticus, Eutropius niloticus and Synodentis budgetti) were caught from Lake Chad in Doron Buhari between the periods of February to September 2008. The bone, liver, stomach, gills and Kidney from the six species were carefully dissected for the determination of heavy metals. Levels of heavy metals were determined using Perkin-Elmer Analyst 300 Atomic Absorption Spectrophotometry (AAS). The maximum concentration of heavy metals studied was observed in the liver tissues, while bone tissues had the least concentration. The highest level of copper was observed in O. niloticus, while E. niloticus shows the least. For Co concentrations, the maximum was obtained in E. niloticus and the minimum in C. anguillaris. High levels of Pb, Fe and Cd were found in the liver tissues of T. zilli, while S. budgetti had the least concentrations. Variations in the parameters determined were found to be statistically significant (p<0.05). Based on the result obtained, the levels of the elements under study in the six species were within tolerance limits that are safe for human consumption.
ACCESSION #
48637438

 

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