Southern Mediterranean coast pollution: Long-term assessment and evolution of PAH pollutants in Monastir Bay (Tunisia)
| Autor: | Nouha Khiari, Abdelkrim Charef, Rim Azouzi, Nadia Khalil, Abdelfattah Atoui, Samia Khadhar |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Pollution Mediterranean climate Geologic Sediments Tunisia media_common.quotation_subject STREAMS 010501 environmental sciences Aquatic Science Oceanography 01 natural sciences Ecosystem Polycyclic Aromatic Hydrocarbons 0105 earth and related environmental sciences media_common Pollutant 010604 marine biology & hydrobiology Sediment Bays Environmental chemistry Environmental science Environmental Pollutants Bay Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Marine pollution bulletin. 167 |
| ISSN: | 1879-3363 |
| Popis: | In order to evaluate the long-term pollution level(s) of Monastir Bay (Tunisian-Mediterranean coastal area), four sediment cores were collected from the meeting points between the main local streams and the marine environment and investigated. Macroscopic observations and granulometric and chemical compositions showed that this Bay received heterogeneous materials. The distribution of 15 total PAH (priority pollutants) concentrations in different levels of core sediments ranged from 222 to 2992 μg kg−1. Thus, the Bay had been polluted for a long time, and sediments and pollutants had varied anthropogenic sources. After that, local hydrodynamism controlled their distributions. Molecular-weight Polycyclic Aromatic Hydrocarbons (PAHs) and calculated LMW/HMW ratios showed that pollutants were principally a mixture of pyrolytic and petrogenic sources. One part of these pollutants had local origins, and the most important amounts were of distant origins. Monastir Bay was considered a moderate to highly polluted area, and sediments had an ecosystem risk. |
| Databáze: | OpenAIRE |
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