Distribution of essential heavy metals in the aquatic ecosystem of Lake Manzala, Egypt
Lake Manzala is the largest and most productive lake of Egypt's northern coastal lakes and has socio-economic impacts. Pollution by heavy metals is the most significant type of pollution worldwide, particularly in Lake Manzala, which receives mixed discharges from densely populated areas. Water...
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| Format: | Article |
| Language: | English |
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Elsevier
2019-08-01
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| Series: | Heliyon |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844019359365 |
| _version_ | 1819063270325092352 |
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| author | Randa R. Elmorsi Khaled S. Abou-El-Sherbini Gamal Abdel-Hafiz Mostafa Mohamed A. Hamed |
| author_facet | Randa R. Elmorsi Khaled S. Abou-El-Sherbini Gamal Abdel-Hafiz Mostafa Mohamed A. Hamed |
| author_sort | Randa R. Elmorsi |
| collection | DOAJ |
| description | Lake Manzala is the largest and most productive lake of Egypt's northern coastal lakes and has socio-economic impacts. Pollution by heavy metals is the most significant type of pollution worldwide, particularly in Lake Manzala, which receives mixed discharges from densely populated areas. Water samples were collected at twelve sites around the lake in winter and summer of 2015. Samples of Eichhornia crassipes were collected in the winter, and Oreochromis niloticus samples were collected at two sites (8 and 10). V, Cr, Mn, Fe, Co, Ni, Cu, and Zn were analysed in these samples using inductively coupled plasma-mass spectrometry. The average metal concentrations were below the internationally accepted upper permissible limits and are improved compared to those in previous studies. However, the metal concentrations at the eastern and southeastern sites were higher than the allowable limits due to multiple waste discharges. Pollution assessment using pollution risk indicators indicated low to moderate concentrations of metal enrichment in the sediment and biota of the lake, except at sites near the eastern and southeastern drains; these latter sites were considered to be hazardous and should be taken into account in the current development efforts of the lake. Complete removal of floating plants transported by drains is recommended. |
| first_indexed | 2024-12-21T15:12:00Z |
| format | Article |
| id | doaj.art-590b9f29b6d54713bf500e95eebcfd77 |
| institution | Directory Open Access Journal |
| issn | 2405-8440 |
| language | English |
| last_indexed | 2024-12-21T15:12:00Z |
| publishDate | 2019-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj.art-590b9f29b6d54713bf500e95eebcfd772022-12-21T18:59:15ZengElsevierHeliyon2405-84402019-08-0158e02276Distribution of essential heavy metals in the aquatic ecosystem of Lake Manzala, EgyptRanda R. Elmorsi0Khaled S. Abou-El-Sherbini1Gamal Abdel-Hafiz Mostafa2Mohamed A. Hamed3Laboratory of Marine Chemistry, National Institute of Oceanography and Fisheries, Alexandria Branch, Egypt; Corresponding author.Department of Inorganic Chemistry, National Research Centre, 33 El Bohouth st. (former Eltahrir st.), Dokki, Cairo, 12311, EgyptPharmaceutical Chemistry Department, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh, 11451, Saudi Arabia; Micro-analytical Laboratory, Applied Organic Chemistry Department, National Research Centre, Dokki, Cairo, 12311, EgyptLaboratory of Marine Chemistry, National Institute of Oceanography and Fisheries, Alexandria Branch, EgyptLake Manzala is the largest and most productive lake of Egypt's northern coastal lakes and has socio-economic impacts. Pollution by heavy metals is the most significant type of pollution worldwide, particularly in Lake Manzala, which receives mixed discharges from densely populated areas. Water samples were collected at twelve sites around the lake in winter and summer of 2015. Samples of Eichhornia crassipes were collected in the winter, and Oreochromis niloticus samples were collected at two sites (8 and 10). V, Cr, Mn, Fe, Co, Ni, Cu, and Zn were analysed in these samples using inductively coupled plasma-mass spectrometry. The average metal concentrations were below the internationally accepted upper permissible limits and are improved compared to those in previous studies. However, the metal concentrations at the eastern and southeastern sites were higher than the allowable limits due to multiple waste discharges. Pollution assessment using pollution risk indicators indicated low to moderate concentrations of metal enrichment in the sediment and biota of the lake, except at sites near the eastern and southeastern drains; these latter sites were considered to be hazardous and should be taken into account in the current development efforts of the lake. Complete removal of floating plants transported by drains is recommended.http://www.sciencedirect.com/science/article/pii/S2405844019359365Environmental scienceEcologyAquatic ecologyEnvironmental assessmentEnvironmental chemistryEnvironmental health |
| spellingShingle | Randa R. Elmorsi Khaled S. Abou-El-Sherbini Gamal Abdel-Hafiz Mostafa Mohamed A. Hamed Distribution of essential heavy metals in the aquatic ecosystem of Lake Manzala, Egypt Heliyon Environmental science Ecology Aquatic ecology Environmental assessment Environmental chemistry Environmental health |
| title | Distribution of essential heavy metals in the aquatic ecosystem of Lake Manzala, Egypt |
| title_full | Distribution of essential heavy metals in the aquatic ecosystem of Lake Manzala, Egypt |
| title_fullStr | Distribution of essential heavy metals in the aquatic ecosystem of Lake Manzala, Egypt |
| title_full_unstemmed | Distribution of essential heavy metals in the aquatic ecosystem of Lake Manzala, Egypt |
| title_short | Distribution of essential heavy metals in the aquatic ecosystem of Lake Manzala, Egypt |
| title_sort | distribution of essential heavy metals in the aquatic ecosystem of lake manzala egypt |
| topic | Environmental science Ecology Aquatic ecology Environmental assessment Environmental chemistry Environmental health |
| url | http://www.sciencedirect.com/science/article/pii/S2405844019359365 |
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