Samples of Anthocleista djalonensis (AD), Costus afer (CA) Anthocleista vogelii (AV), Raphia hookeri (RH) and Alstonia boonei (AB) plants to growing in oil polluted soil were analysed for their trace metal contents. Iron (Fe), manganese (Mn), lithium (Li), zinc (Zn), copper (Cu), cadmium (Cd), chromium (Cr), lead (Pb), cobalt (Co), vanadium (V), molybdenum (Cd), mercury (Hg) and selenium (Se) were analysed using absorption spectrophotometer (AAS). Results indicate the order of mobility of trace metal to be: Mn > Fe > Zn > Li > Pb > Co > Cu > Mo > Cd > Hg > V > Se > Cr. Trace metal contents were systematically higher in oil polluted than in unpolluted soils except Li and Co. Plants that adsorbed the greatest quantity of trace metal from the soil in increasing order were: AD > and CA > AV > RH and AB. Results also show that AD and CA plants can be used for phytoremedication of polluted soils of trace metals. Using these plants for consumption by man and animals may pose a serious health risk.
