Evaluation of heavy metal content in Qaroun Lake, El-Fayoum, Egypt. Part I: Bottom sediments
Evaluation of heavy metal content in Qaroun Lake, El-Fayoum, Egypt. Part I: Bottom sediments
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DOI：
10.1016/j.jrras.2015.02.011
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发表时间：
2015-07-01
影响因子：
1.7
通讯作者：
El-Sabagh, M. E. I.
中科院分区：
文献类型：
--
作者：
El-Sayed, S. A.;Moussa, E. M. M.;El-Sabagh, M. E. I.
本文是为了评估污染的程度在Qaroun湖底沉积物，El-Fayoum，埃及。分析了沉积物样品的粒度分布和重金属浓度。用x射线荧光光谱法测定了10种重金属（单位：ppm）。沉积物中砷的平均浓度分别为：As 2.99、Cr 124.89、Cu 38.91、Pb 14.21、Ni 54.74、Zn 58.76、Sn 3.27、Mo 6.77、V 162.77、Co 11.70。与中部和西部的沉积物相比，大部分这些金属在湖的东部被发现浓度很高。揭示了排水沟污水对湖泊沉积物金属含量的影响。研究了浓度对沉积物粒度的依赖关系，并推导出淤泥和粘土粒度与Cr、Cu、Ni和Mo浓度之间的高度相关性（R范围为0.61 ~ 0.73）。利用污染指标、地质堆积指数、Igeo和污染因子、Cf和污染程度Cd对湖泊的潜在污染进行了评价，得出湖泊沉积物存在污染条件的结论。它们受到Cr、Mo、V和Co金属的中度污染。版权所有埃及辐射科学与应用学会这是一篇基于CC by - nc - nd许可的开放获取文章。
This paper was undertaken in order to assess the extent of contamination in bottom sediments of Qaroun Lake, El-Fayoum, Egypt. Sediment samples were analyzed for grain size distribution and heavy metals concentration. Ten heavy metals were determined (in ppm) by X-Ray Fluorescence Spectrometry. The average concentration values in sediments are 2.99 (As), 124.89 (Cr), 38.91(Cu), 14.21 (Pb), 54.74 (Ni), 58.76 (Zn), 3.27 (Sn), 6.77 (Mo), 162.77 (V) and 11.70 (Co). Most of these metals are found with high concentrations in the eastern part of the lake, comparing with them in sediments of the central and western parts. The impact of drains effluents on the lake sediment-metals content is revealed. The dependence of concentrations on the sediment grain size is examined and high correlations between silt and clay-sized grains and the concentrations of Cr, Cu, Ni and Mo are deduced (R ranges from 0.61 to 0.73). Potential contamination of the lake is assessed using the contamination indicators, the geo-accumulation index, Igeo and contamination factor, Cf and the degree of contamination, Cd. Based on the obtained results, it is concluded that the lake sediments are found in contamination conditions. They are moderately contaminated with Cr, Mo, V and Co metals. Copyright (C) 2015, The Egyptian Society of Radiation Sciences and Applications. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license.