T. LANİYAN, A OMOSANYA, K.o ADESANYA, . O

Geochemical distribution of heavy metals in soils and stream sediments of Omiyale and environs, Ibadan, southwestern Nigeria

An assessment of geochemical distribution of heavy metals in soils and sediments of Omiyale was done to elucidate their effect on plants and animals in the study area. Nine (9) soil samples and four (4) stream sediments were randomly collected, sieved with the 63um sieve and analyzed using the inductive coupled plasma mass spectrometry (ICP-MS) technique. Fe2O3 is dominant in the stream sediment used as waste disposal tanks. Influence of anthropogenic enrichment was noticed from the index of geoaccumulation (Igeo) Zn (2.40), Pb (4.75); inter-elemental analysis Cu-Pb (0.6), As-Zn (0.7), and quantification of degree of pollution Pb (62.2%) in soil, Pb (44.6%) in stream sediment with an increasing order Zn>Pb>Ba>Cu>As>Cd. The study area is polluted with Pb and Zn attributed to urbanized anthropogenic sources, which are mostly vehicular emission, and domestic sewage. Public effect of these elements could include lung cancer and cardiovascular diseases. Based on the above evaluation, a recommendation in respect of public awareness program on sanitizations and contamination of quality control of soil and sediments are encouraged

Keywords:

Anthropogenic disposal tank, contamination, sanitization, urbanization,

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