ABSTRACT

The long mining activities in Ouarsenis region can be the soil pollution source around the mine. For this reason, for the first one, seven heavy metals collected from the mine and its surroundings are calculated to know the source of these heavy metals and evaluate their contamination in the study area. The means concentration of studied heavy metals vicinity to Boucaid mine range between 2.91 and 92.72 mg.kg⁻¹, the high value is recorded for Pb and the low for Zn. The means concentration of seven heavy metals in the mine varies between 3.35 and 168.52 mg.kg⁻¹. The concentration of samples collected in Sidi Slimane have high concentration of Pb than other sites. The means concentration of Mn, Pb, and Cd are higher than background values and in the mine than study area, which suggests their anthropogenic source. The geoaccumulation index values of Cr, Cu, Pb, Mn, Ni, and Cd are low to zero, which indicated that the study area is uncontaminated by these heavy metals. The index of potential ecological risk factors is 80.86, which is less than 150, showed low potential ecological risk. The principal component analysis and hierarchical cluster analysis confirm the mixed anthropogenic sources of heavy metals.

摘要

Ouarsenis 地区长期的采矿活动可能是矿山周边的土壤污染源。为此，对于第一个，计算了从矿山及其周围收集的七种重金属，以了解这些重金属的来源并评估其在研究区域的污染。Boucaid 矿附近所研究的重金属的平均浓度范围在 2.91 和 92.72 mg.kg ^{-1 之间}，记录的高值是铅，低值是锌。矿山中七种重金属的平均浓度在 3.35 和 168.52 mg.kg ^-1之间变化. Sidi Slimane 采集的样品浓度比其他站点的 Pb 浓度高。Mn、Pb和Cd的平均浓度高于背景值，矿区高于研究区，表明其为人为来源。Cr、Cu、Pb、Mn、Ni、Cd的地积累指数值均低至零，表明研究区未受到这些重金属的污染。潜在生态风险因子指数为80.86，小于150，表明潜在生态风险较低。主成分分析和层次聚类分析证实了重金属的混合人为来源。