This study evaluates heavy metal pollution in soils from the Daniela oil sites located in the Kouno sub-prefecture, Loug-Chari Department. The primary objective is to determine the extent of heavy metal contamination ...This study evaluates heavy metal pollution in soils from the Daniela oil sites located in the Kouno sub-prefecture, Loug-Chari Department. The primary objective is to determine the extent of heavy metal contamination in the Daniela area. At the Raphia site, the metal concentration order is Cu > Mn > Fe > Cd > Pb, while at the Lanéa 1 and Lanéa 2 sites, it is Cu > Fe > Mn > Cd > Pb. Contamination factors (CF) for Mn, Fe, and Pb are very low (< 1), indicating no pollution from these metals. However, the contamination factors for Cd and Cu are significantly high according to the AFNOR standard. Additionally, the average contamination index across all three sites exceeds 2, confirming soil pollution by Cd and Cu at the sampled locations.展开更多
文摘This study evaluates heavy metal pollution in soils from the Daniela oil sites located in the Kouno sub-prefecture, Loug-Chari Department. The primary objective is to determine the extent of heavy metal contamination in the Daniela area. At the Raphia site, the metal concentration order is Cu > Mn > Fe > Cd > Pb, while at the Lanéa 1 and Lanéa 2 sites, it is Cu > Fe > Mn > Cd > Pb. Contamination factors (CF) for Mn, Fe, and Pb are very low (< 1), indicating no pollution from these metals. However, the contamination factors for Cd and Cu are significantly high according to the AFNOR standard. Additionally, the average contamination index across all three sites exceeds 2, confirming soil pollution by Cd and Cu at the sampled locations.
