Distribution and Genesis of Hydrocarbons in Water and Sediments of the Kerch Strait

The content and composition of hydrocarbons (aliphatic hydrocarbons – AHCs and polycyclic aromatic hydrocarbons – PAHs) in the marine surface suspended particulate matter and surface bottom sediments of the Kerch Strait in April and September 2019 are presented. Despite the high AHCs concentrations...

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Bibliographic Details
Published in:Geochemistry international 2022, Vol.60 (1), p.43-51
Main Authors: Nemirovskaya, I. A., Khaustov, A. P., Redina, M. M.
Format: Article
Language:English
Subjects:
Air pollution
Aliphatic hydrocarbons
Alkanes
Aromatic compounds
Aromatic hydrocarbons
Bottom sediments
Combustion products
Composition
Earth and Environmental Science
Earth Sciences
Emissions
Factor analysis
Geochemistry
Hydrocarbons
Particulate emissions
Particulate matter
Pollution sources
Polycyclic aromatic hydrocarbons
Runoff
Saturated hydrocarbons
Sediment
Sediments
Sediments (Geology)
Shipping
Straits
Surface water
Suspended matter
Suspended particulate matter
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Summary:The content and composition of hydrocarbons (aliphatic hydrocarbons – AHCs and polycyclic aromatic hydrocarbons – PAHs) in the marine surface suspended particulate matter and surface bottom sediments of the Kerch Strait in April and September 2019 are presented. Despite the high AHCs concentrations in surface waters (56–186 μg/L), their composition differ from oil alkanes due to their rapid degradation and the influence of pyrogenic emissions from watercrafts. Low PAHs concentrations (5–9 ng/L) in marine suspended matter are caused by their lower contents in the emission sources, as well as by the current pattern in the strait. In the coarse-grained bottom sediments, the concentrations of AHCs (1–63 μg/g) and PAHs (1–728 ng/g) were also lower than those in other Black Sea areas. The use of factor analysis showed that the main source of pollution is pyrogenic (combustion products of marine fuel). To a lesser extent, the composition of PAHs is affected by the influence of runoff from the mainland and the flow of oil products from shipping.
ISSN:0016-7029
1556-1968
DOI:10.1134/S0016702922010098