Soil Road dust Stream sediment
Element MR range Igeo range MR range Igeo range MR range Igeo range
Pb 0- 30 -1 to 4 1-19 -1 to 4 0-1 -3 to 1
Zn 0-3 -3 to 0 1-5 -3 to 2 0 -3 -2 to 1
Cu 0-1 -2 t0 -1 1-6 0 -2 0-1 -3 to 1
As 6-Jan -1 to 2 2- 11 0 to 3 6-Jan -1 to 2
Cr 0-1 -2 to 2 1-6 -2 to 1 0-2 -2 to 0
Ni 2-Jan -1 to 0 1-3 -1 to 0 1- 2 -2 to 0
Table 7: Calculated MR and Igeo for selected elements in Ijebu-Ode.