Characterization of oil pollution of the Azov Sea in 2016–2020
This article presents the results of oil pollution monitoring of water and bottom sediments of the Azov Sea in the summer and autumn seasons of 2016–2020. The detected concentrations of petroleum products are given in terms of the total content of the main petroleum components: hydrocarbons, resins, and asphaltenes. In some water samples, the concentrations of petroleum products varied from <0.02 to 2.0 mg/dm3 in summer, and from <0.02 to 0.20 mg/dm3 in autumn. In various years, the weighted average concentrations of petroleum products in water exceeded the maximum permissible level (0.05 mg/dm3) by 0.08–2.6 times in summer, and by 0.08–1.2 times in autumn. In sediments, the concentrations of petroleum products were in the range of <0.02–1.01 g/kg in summer, and 0.02–0.85 g/kg dry weight in autumn; the weighted average concentrations varied from 0.19 to 0.55 mg/dm3 and from 0.25 to 0.34 mg/dm3 during the summer and autumn seasons, respectively. More than a half of the investigated sea bottom sediments belong to the category of pollution indicated by a decrease in species diversity and the replacement of dominant forms. According to the data averaged over the period under study, higher pollution of water and bottom sediments is observed in the central regions of the Taganrog Bay and the sea. The most significant inflow of petroleum products occurs in the eastern regions of the Taganrog Bay and the sea in autumn, and in the southern region of the sea in summer.
| Main Authors: | , , , , , , |
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| Format: | Journal Contribution biblioteca |
| Language: | Russian |
| Published: |
2021
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| Subjects: | Bottom sediments, Seasonal variations, Species diversity, Донные отложения, Сезонные изменения, Видовое разнообразие, ASFA_2015::O::Oil pollution, ASFA_2015::W::Water quality control, ASFA_2015::P::Petroleum hydrocarbons, |
| Online Access: | http://hdl.handle.net/1834/41742 |
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