Abstract
Lead concentration in olive, leaves, and oil of olive tree at Al-harsha area (Weeastern part of Al-Zawiya) were evaluated, by using Graphite Furnace Atomic Absorption Spectrometry (GFAAS). The twenty eight samples of each leaves, fruits and oil were collected and analyzed separately. The concentration of heavy metals were determined in ppm. The results indicated that, the average ± SE of lead concentration in leaves was about 0.657±0.11 ppm, followed by a level of 0.152±0.06 ppm in fruits and the lowest value was in oil (0.057±0.02 ppm). The concentration of lead in the oil samples collected from the southern part of Al-Harsha were higher than that of the samples collected from the northern part, and 14% of this regions were beyond the permitted level (0.38 ppm). The concentrations of lead were relatively low in oil samples compered with leaves and fruits. In general it can concluded that, more attention should be made to prevent heavy metals pollution. Keywords: Heavy metals, olive tree, Olea europaea, pollution, Libya.