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Journal of Applied Sciences
Year: 2005  |  Volume: 5  |  Issue: 2  |  Page No.: 347 - 350

Chemical Characterisation of Suspended Particulates along Air Corridors of Motorways in Two Nigerian Cities

I.B. Obioh, F.S. Olise, O.K. Owoade and H.B. Olaniyi    

Abstract: Total Reflection X-ray Fluorescence (TXRF) technique was used to analyze Suspended Particulate Matter (SPM) collected by gravimetric sampling along air corridors of motorways in Lagos and Ile-Ife, Nigeria. Up to 16 elements were identified and quantified. The Toxicity Potentials (TP) for SPM were high for all sampling sites in the two cities, except for a residential site in Ile-Ife whose TP value is 0.43. For lead (Pb), the TP values were high for all the sites in Lagos and low for all sites in Ile-Ife, except for one bus stop site in the latter city. Because of the health implication of high lead burden in the atmosphere there is need for improved management of the transport sector, possibly through the introduction of integrated transport system to reduce the current over-dependence on road transport as well as the need for gradual phase-out of leaded gasoline in Nigeria.

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