Polycyclic Aromatic Hydrocarbons in Soil and Vegetation of Niger Delta, Nigeria: Ecological Risk Assessment

Figure 7

Percentage composition and molecular weight distribution of PAHs in soil and plants from different locations in the Niger Delta. PP = Pennisetum purpureum Schumach (elephant grass), ZM = Zea mays (L.) (maize), PM = Panicum maximum (Jacq) (guinea grass), and SS = soil sample.