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  • Title: Southern Mediterranean coast pollution: Long-term assessment and evolution of PAH pollutants in Monastir Bay (Tunisia).
    Author: Khiari N, Charef A, Atoui A, Azouzi R, Khalil N, Khadhar S.
    Journal: Mar Pollut Bull; 2021 Jun; 167():112268. PubMed ID: 33838599.
    Abstract:
    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.
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