Figure 2. Mean concentrations of BTEX in Subsoil compared with the Canadian soil quality guideline for human health.

From

Assessment of Soil Contamination with Monocyclic Aromatic Hydrocarbons and Heavy Metals in Residential Areas Sited Close to Fuel Filling Stations in Ibadan Metropolis

Emmanuel. O. Olukoya, Godson R. E. E. Ana, Elizabeth O. Oloruntoba

Journal of Environment Pollution and Human Health. 2016, 4(3), 60-65 doi:10.12691/jephh-4-3-1