1. Adedosu HO, Adewuyi GO, Adie GU (2013) Assessment of heavy metals in soil, leachate and underground water samples collected from the vicinity of Olusosun Landfill in Ojota, Lagos, Nigeria. Transnatl J Sci Technol 3(6):73–85
2. Agyarko K, Darteh E, Berlinger B (2010) Metal levels in some refuse dump soils and plants in Ghana. Plant Soil Environ 56(5):244–251
3. Akoto O, Ephraim JH, Darko G (2008) Heavy metals pollution in surface soils in the vicinity of abandoned railway servicing workshop in Kumasi, Ghana. Int J Environ Res 2(4):359–364
4. Appel C, Ma L (2002) Concentration, pH, and surface charge effects on cadmium and lead sorption in three tropical soils. J Environ Qual 31:581–589
5. Awokunmi EE, Asaolu SS, Ipinmoroti KO (2010) Effect of leaching on heavy metals concentration of soil in some dumpsites. Afr J Environ Sci Technol 4(8):495–499