Abstract:
This paper reports on findings using hair as biomonitor marker for heavy metals (Pb, Cd, Cr and Cu) from
geological source and exposure through regular maize consumption among selected male adults in Eldoret
Municipality who had resided for five continous years. Concentration of Pb and Cu in anthropogenic
pathways, while Cd and Cr reflected accumulation from the human activities. Usually higher concentration
of heavy metals hair samples suggest longer term exposure. The estimated intake of Cd and Cr from maize
in one zone associated with high concentration of the metals from geological source was appreciably
above the respective recommended daily allowance (RDA), signifying possible health risks to
humans. Significant correlations between Pb, Cd and Cu in hair and heavy metals from maize consumed
suggested maize consumption as possible pathways of exposure of heavy metals in humans. Possible health
risks from heavy metals were likely due to consumption of higher quantities of maize contaminated from
geological and human activities.
