Assessment of metal distribution and pollution indices in the surface sediments along the western Egyptian Mediterranean Sea Coast”

IF 2.2 Q1 MARINE & FRESHWATER BIOLOGY

Egyptian Journal of Aquatic Research Pub Date : 2023-12-01 DOI:10.1016/j.ejar.2023.10.003

Walaa M. Thabet, Abeer A. Moneer, Mohamed Khedawy, Hoda H.H. Ahdy, Ola E. Abdelwahab

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引用次数: 1

Abstract

Metals enter aquatic systems directly from anthropogenic sources, natural, and atmospheric deposition. Sediment is an essential component of aquatic ecosystems; it serves as a habitat for a variety of aquatic organisms. Due to their non-biodegradability, metals are among the most harmful pollutants in aquatic environments. The purpose of this study is to evaluate the levels of Mn, Fe, Cu, Pb, Zn, Ni, Cd, and Co verified from a total of 29 surface sediment samples collected along the western Mediterranean coast of Egypt in 2020—i.e., from Abu Qir Bay, al-Mex Bay, and Marsa Matrouh. It also aims to assess the ecological risk related to metal levels in sediments. The results revealed that metals followed a decreasing concentration sequence on average: Fe > Mn > Zn > Pb > Co > Ni > Cu > Cd. Both the geo-accumulation index (I_geo) and the pollution load index (PLI) showed that Abu Qir Bay sediments are moderately polluted; al-Mex Bay sediments are slightly polluted and Marsa Matrouh sediments are unpolluted. A multivariate statistical analysis was used, including Pearson correlation analysis and clustering heatmap, where the results are classified into two clusters according to their sources.

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埃及西地中海沿岸表层沉积物中的金属分布和污染指数评估"

金属直接从人为来源、自然沉积和大气沉积进入水生系统。沉积物是水生生态系统的重要组成部分；它是各种水生生物的栖息地。由于其不可生物降解性，金属是水生环境中最有害的污染物之一。本研究的目的是评估 2020 年在埃及西地中海沿岸采集的共 29 个表层沉积物样本中验证的锰、铁、铜、铅、锌、镍、镉和钴的含量，这些样本分别来自 Abu Qir 海湾、al-Mex 海湾和 Marsa Matrouh。该研究还旨在评估与沉积物中金属含量有关的生态风险。研究结果表明，金属的平均浓度依次递减：铁、锰、锌、铅、钴、镍、铜、镉。地质累积指数（Igeo）和污染负荷指数（PLI）均显示，阿布基尔湾沉积物受到中度污染；al-Mex 湾沉积物受到轻度污染，而 Marsa Matrouh 沉积物未受污染。采用了多变量统计分析，包括皮尔逊相关分析和聚类热图，根据污染源将结果分为两类。

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来源期刊

Egyptian Journal of Aquatic Research MARINE & FRESHWATER BIOLOGY-

CiteScore

6.80

自引率

5.70%

发文量

审稿时长

39 days

期刊介绍： The Egyptian Journal of Aquatic Research is published by the National Institute of Oceanography & Fisheries. The Journal isdevoted to the publication of original papers and reviews in all branches of aquatic sciences (Oceanography, Limnology, Fisheries,Aquaculture and environmental sciences)