ABSTRACT

The present study aims to assess the spatial distribution of heavy metals in sediment of the ivorian coastal zone using X-ray fluorescence spectroscopy (XRF). The total average concentrations of 13 heavy metals in four seasons and six campaigns on a set of 72 samples have been obtained. Those samples were collected from 12 sites located in the Toukouzou Hozalem-Assinie region. The results revealed that they are ranked in the following decreasing order: Fe > Al > Cr > Mn > V > Zn > Ni > Pb > As > Cu > Cd > Sb > Hg. Geoaccumulation index (Igeo), enrichment factor (EF), contamination factor (CF) and pollution load Index (PLI) were used to estimate the impact of anthropogenic activities on the quality of the sediments. The values of these indices showed that sediments are highly contaminated mainly with Cd, Cr, As and are of anthropogenic origin.

摘要

本研究旨在利用 X 射线荧光光谱 (XRF) 评估科特迪瓦海岸带沉积物中重金属的空间分布。在一组 72 个样品上获得了 4 个季节和 6 个运动的 13 种重金属的总平均浓度。这些样本是从位于 Toukouzou Hozalem-Assinie 地区的 12 个地点收集的。结果表明，它们的降序排列如下：Fe > Al > Cr > Mn > V > Zn > Ni > Pb > As > Cu > Cd > Sb > Hg。地积聚指数（Igeo）、富集因子（EF）、污染因子（CF）和污染负荷指数（PLI）被用来估计人为活动对沉积物质量的影响。这些指标的值表明，沉积物的高度污染主要是 Cd、Cr、