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- W2030387002 abstract "Elemental concentrations of air particulates collected by a gravimetric method were determined using proton induced X-ray emission (PIXE) and energy dispersive X-ray fluorescence (EDXRF) analytical techniques. Air particulate samples were collected over a six-month period at three positions (middle and two opposite sides) across a road at different locations. Total suspended particulate (TSP) matter concentrations were between 100 and 2000 μg/m3 in Lagos and between 120 and 720 μg/m3 at Ile-Ife; traffic densities were 1000–10000 vehicles per hour and 450–1500 vehicles per hour respectively. Preliminary results show that Pb, Br and Zn were highly enriched relative to the Earth's crust and the Pb concentration exceeded the threshold limit value (TLV) prescribed by the Nigerian Federal Environmental Protection Agency (FEPA) for over 50% of the sampling times. Furthermore, the lead to bromine ratios in both cities were found to be within the range of those emanating from vehicular exhaust (i.e. 2.57)." @default.
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- W2030387002 date "1993-06-01" @default.
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- W2030387002 title "Analysis of suspended air particulates along some motorways in Nigeria by PIXE and EDXRF" @default.
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- W2030387002 doi "https://doi.org/10.1016/0168-583x(93)95373-d" @default.
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