Toxicity Assessment of some Crude Oil Contaminated Soils in the Niger Delta
This paper considered the toxicity assessment of some crude oil contaminated soils in Niger Delta areas. The soil samples were collected from different horizontal distances, vertical depths and contaminated soil of different ages. The heavy metals in the contaminated soils were digested and extracted using di-acid digested and DTPA extraction methods respectively. The physiochemical parameters (moisture content, pH, N, P and heavy metals (Ni, Pb and Cd) were analysed with APHA method. The heavy metals concentration was determined using atomic absorption spectrophotometer (AAS). The results show that the metals concentration decreased with the age of the contaminated soil and with increased vertical depths. However, the metals concentrations were almost constant at different horizontal distances. Similar trend was observed for the moisture content, pH, N, P and K.
Prof. A.O. Akii Ibhadode, A.I. Igbafe and B.U. Anyata
F.A. Aisien et al., "Toxicity Assessment of some Crude Oil Contaminated Soils in the Niger Delta", Advanced Materials Research, Vols. 62-64, pp. 451-455, 2009