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29246

Distribution and assessment of heavy metals in the coastal area of the Red Sea, Egypt.

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Last updated: 22 Jan 2023

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Abstract

In order to evaluate the contamination state of the Red Sea coastal area, concentrations of heavy metals (Cu, Zn, Cd, Pb, Fe and Mn) were determined in sea water and surface sediments along the western side from Suez to Shalateen. The studied locations were selected to cover potential natural and anthropogenic sources of metal input in the Egyptian Red Sea. Levels of Cu, Zn, Cd, Pb, Fe and Mn in water were 0.85 - 2.61, 2.13 - 14.42, 1.24 - 4.51, 0.11 - 0.31, 8.44 - 33.71 and 0.30 - 0.62 µg/l; while in sediments were 25.67 - 100.77, 52.60 - 143.00, 21.20 - 63.43, 1.23 - 6.63, 11632 – 28321 and 291.43 - 803.80 µg/g, respectively. There were obvious positive correlations between Cu, Zn, Pb and Fe in water; while sediments showed positive correlations between Cd, Zn and Pb as well as between Fe and Mn. The obtained data were further subjected to Principal Component Analysis (PCA). The results lend support to the argument that specific geographical distribution of heavy metals in Red Sea could be related to different types of metal input. In Suez area, highest metal load in water and sediments was due to combined effects of wastes discharge and maritime activities. High contamination of Cd, Zn and Pb in sediments was associated with the shipping process of phosphate ore, while elevated Fe and Mn levels were principally associated with natural input of terrigenous sediments. The sediments indices of enrichment factor and geo-accumulation index showed high enrichment of Pb and Cd  due to contamination from phosphate shipping; and the inflow with terrigenous sediments led to moderated to highly contamination with Fe and Mn.    

DOI

10.21608/ejabf.2019.29246

Keywords

Heavy metals, Red Sea, Monitoring, Seawater, sediments

Authors

First Name

M. E. A.

Last Name

El-Metwally

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Orcid

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First Name

A. I.

Last Name

Othman

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First Name

Kh. M.

Last Name

El-Moselhy

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Volume

23

Article Issue

2

Related Issue

5152

Issue Date

2019-04-01

Receive Date

2018-12-25

Publish Date

2019-03-25

Page Start

1

Page End

13

Print ISSN

1110-6131

Online ISSN

2536-9814

Link

https://ejabf.journals.ekb.eg/article_29246.html

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https://ejabf.journals.ekb.eg/service?article_code=29246

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Original Article

Type Code

103

Publication Type

Journal

Publication Title

Egyptian Journal of Aquatic Biology and Fisheries

Publication Link

https://ejabf.journals.ekb.eg/

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Article

Created At

22 Jan 2023