Speciation study of lead and manganese in roadside dusts from major roads in Ile-Ife, South Western Nigeria

An Assessment of Heavy-Metal Contamination in Soils within Auto-Mechanic Workshops Using Enrichment and Contamination Factors with Geoaccumulation Indexes

“…As noted earlier, the very few studies were based on top 0 -15 cm soil depth. Apart from Pb which was found within the range reported [17], mean concentrations of all the other metals were above levels recorded in literature [3] [28]. …”

Chemical Fractionation of Heavy Metals in Surface Runoff and Associated Sediments of Ile- Ife and Oshogbo Township

“…The total concentration of of Pb, Mn, Ni and Cd in the sediment samples from each site reflect various degrees of contamination, as presented in Table 3 and Although Pb concentrations were generally low, they were higher in areas with relatively high traffic volume; the overall mean concentration determined by this study (26.53 ± 4.59 µg/g) was generally lower than that obtained in speciation studies of roadside dust from major roads in Ile-Ife [13]. However, the mean Mn level determined in Ile-Ife (103.67 ±24.24 µg/g) obtained in this study was significantly higher than the Mn level obtained in a similar study (51.46 ± 15.10 µg/g) [13]. The higher levels of Pb identified in Osogbo (33.62 ± 4.59 µg/g) compared to Ile-Ife (26.53 ± 4.59 µg/g) are likely due to urbanization, industrialization and higher automobile exhaust levels induced by a higher traffic volume.…”

“…Anthropogenic activities have also introduced contaminants that are absorbed into soil particles which are then subsequently entrained into the atmosphere as dust. Research studies on the speciation of roadside dust from major roads in Ile-Ife have been previously conducted [13], but there remains no available information regarding the speciation of the contents of surface runoff water and sediments. This work -61 -DOI: 10.5963/IJEP0601005 aims to determine total heavy metal concentrations and the comprising species in surface runoff and associated sediments obtained from major roads in Ile-Ife and Osogbo in order to compare the extent of metal pollution in the two cities.…”

Heavy Metals (Cd, Pb, Cu, Fe, Cr, Mn, Zn) Contents in Ungulates of Ogun State Agricultural Farm Settlement, Ago - Iwoye, Nigeria

“…Examples include vanadium, tungsten and cadmium (Ogunfowokan et al, 2009). Heavy metal pollution arises from many sources, but mostly from the purification of metals, sedimentation of dust, electroplating, smelting and precipitation of their compounds or ion into the soil which can localize and lays dormant (Blasco et al, 1998).…”