Selenium Concentration Levels in Two Polluted Lagoons, Eastern Red Sea Coastal Waters
The importance of selenium in the marine environment is highlighted by its bilateral behavior as a nutrient and toxic element. The cathodic stripping voltammetry validated method was used to determine the selenium concentration. The concentration of total dissolved selenium (TDSe) in Al-Arbaeen and...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-02-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/15/4/687 |
| _version_ | 1797617747097550848 |
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| author | Ahmed S. A. Ibrahim Radwan Al-Farawati |
| author_facet | Ahmed S. A. Ibrahim Radwan Al-Farawati |
| author_sort | Ahmed S. A. Ibrahim |
| collection | DOAJ |
| description | The importance of selenium in the marine environment is highlighted by its bilateral behavior as a nutrient and toxic element. The cathodic stripping voltammetry validated method was used to determine the selenium concentration. The concentration of total dissolved selenium (TDSe) in Al-Arbaeen and Sharm Obhur lagoons along the eastern Red Sea coastal waters was determined. The total selenium concentration in seven fish species’ muscles was determined. TDSe in the surface water of Al-Arbaeen and Sharm Obhur lagoons showed a maximum concentration of 18.56 and 8.38 nM, respectively. TDSe in the surface water of Al-Arbaeen revealed high concentrations near the wastewater discharging pipes in the lagoon. The linear regression between the TDSe and salinity reflected that the discharged water is the source of selenium with a significant negative correlation of (R<sup>2</sup> = 0.80, <i>p</i> < 0.05). In contrast, TDSe in the surface water of Sharm Obhur showed a significant positive correlation (R<sup>2</sup> = 0.78, <i>p</i> < 0.05). In the lagoon head, hypoxic and anoxic conditions were dominant. This condition reflected the low TDSe concentration and may affect the selenium chemical forms’ abundance in the lagoon. Two fish species <i>Herklotsichthys punctatus</i> and <i>Herklotsichthys</i> revealed high concentrations of 3.99 and 2.40 µg/g, respectively, which exceeded the permissible levels of the WHO, FAO, and ASTDR. |
| first_indexed | 2024-03-11T08:00:07Z |
| format | Article |
| id | doaj.art-d0e9b49bbb83400d8cb812d68945f81f |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-11T08:00:07Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-d0e9b49bbb83400d8cb812d68945f81f2023-11-16T23:52:06ZengMDPI AGWater2073-44412023-02-0115468710.3390/w15040687Selenium Concentration Levels in Two Polluted Lagoons, Eastern Red Sea Coastal WatersAhmed S. A. Ibrahim0Radwan Al-Farawati1Chemistry Program, Department of Chemistry and Earth Sciences, College of Arts and Sciences, Qatar University, Doha 2713, QatarDepartment of Marine Chemistry, Faculty of Marine Sciences, King Abdulaziz University, Jeddah 21589, Saudi ArabiaThe importance of selenium in the marine environment is highlighted by its bilateral behavior as a nutrient and toxic element. The cathodic stripping voltammetry validated method was used to determine the selenium concentration. The concentration of total dissolved selenium (TDSe) in Al-Arbaeen and Sharm Obhur lagoons along the eastern Red Sea coastal waters was determined. The total selenium concentration in seven fish species’ muscles was determined. TDSe in the surface water of Al-Arbaeen and Sharm Obhur lagoons showed a maximum concentration of 18.56 and 8.38 nM, respectively. TDSe in the surface water of Al-Arbaeen revealed high concentrations near the wastewater discharging pipes in the lagoon. The linear regression between the TDSe and salinity reflected that the discharged water is the source of selenium with a significant negative correlation of (R<sup>2</sup> = 0.80, <i>p</i> < 0.05). In contrast, TDSe in the surface water of Sharm Obhur showed a significant positive correlation (R<sup>2</sup> = 0.78, <i>p</i> < 0.05). In the lagoon head, hypoxic and anoxic conditions were dominant. This condition reflected the low TDSe concentration and may affect the selenium chemical forms’ abundance in the lagoon. Two fish species <i>Herklotsichthys punctatus</i> and <i>Herklotsichthys</i> revealed high concentrations of 3.99 and 2.40 µg/g, respectively, which exceeded the permissible levels of the WHO, FAO, and ASTDR.https://www.mdpi.com/2073-4441/15/4/687total dissolved seleniumAl-Arbaeen lagoonSharm Obhurwastewater pollutionseawaterfish |
| spellingShingle | Ahmed S. A. Ibrahim Radwan Al-Farawati Selenium Concentration Levels in Two Polluted Lagoons, Eastern Red Sea Coastal Waters Water total dissolved selenium Al-Arbaeen lagoon Sharm Obhur wastewater pollution seawater fish |
| title | Selenium Concentration Levels in Two Polluted Lagoons, Eastern Red Sea Coastal Waters |
| title_full | Selenium Concentration Levels in Two Polluted Lagoons, Eastern Red Sea Coastal Waters |
| title_fullStr | Selenium Concentration Levels in Two Polluted Lagoons, Eastern Red Sea Coastal Waters |
| title_full_unstemmed | Selenium Concentration Levels in Two Polluted Lagoons, Eastern Red Sea Coastal Waters |
| title_short | Selenium Concentration Levels in Two Polluted Lagoons, Eastern Red Sea Coastal Waters |
| title_sort | selenium concentration levels in two polluted lagoons eastern red sea coastal waters |
| topic | total dissolved selenium Al-Arbaeen lagoon Sharm Obhur wastewater pollution seawater fish |
| url | https://www.mdpi.com/2073-4441/15/4/687 |
| work_keys_str_mv | AT ahmedsaibrahim seleniumconcentrationlevelsintwopollutedlagoonseasternredseacoastalwaters AT radwanalfarawati seleniumconcentrationlevelsintwopollutedlagoonseasternredseacoastalwaters |