Samples of marine sediment were taken on 4 selected sites close to the shipyard industry in Kostrena coastal area. Concentration of polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs) and heavy metals (Cu, Pb, Zn, Hg, Fe) were analyzed from chemical-analytical and toxicological aspect. For toxicity detection, the bacterial bioluminescence test (Vibrio fisheri) was used. Concentration of total PAHs varied in the range from 697 to 7807 microg/kg dry weight in marine sediments. The concentration of PCBs in sediment was 1.1 mg/kg dry weight. The highest concentrations of heavy metals were found at the station within the shipyard. PAH toxicity was not correlated with the toxic potential of sediments. The obtained results indicate a high degree of environmental risk, especially at stations within the shipyard, with the 54% possibility of toxic effects. Chemical determination of the concentration of conventional pollutants is not sufficient for assessing the quality of the marine environment and it is necessary to use other approaches in order to evaluate the biological impact.
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Environ Microbiome
January 2025
Biological Oceanography, Leibniz Institute for Baltic Sea Research Warnemünde (IOW), 18119, Rostock, Germany.
Background: Zostera marina is an important ecosystem engineer influencing shallow water environments and possibly shaping the microbiota in surrounding sediments and water. Z. marina is typically found in marine systems, but it can also proliferate under brackish conditions.
View Article and Find Full Text PDFEnviron Res
January 2025
Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen 361102, China; State Key Laboratory of Marine Environmental Science and International Institute of Sustainability Science, College of the Environment and Ecology, Xiamen University, Xiamen 361102, China.
Mar Pollut Bull
January 2025
College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China. Electronic address:
Triclocarban (TCC) and triclosan (TCS) are applied in a wide range of pharmaceutical and personal care products to prevent or reduce bacterial growth. Due to their extensive application, they are frequently detected in marine environments. In this study, marine sediment systems exposed to different concentrations of TCC and TCS were established to evaluate their effects on microbial communities.
View Article and Find Full Text PDFSensors (Basel)
December 2024
Department of Operational Oceanography, Maritime Institute, Gdynia Maritime University, ul. Roberta de Plelo 20, 80-848 Gdańsk, Poland.
The aim of this study is to verify the possibility of detecting oil in the bottom sediment using a fibre optic system. The presence of oil is assessed on excitation-emission spectra obtained from spectral fluorescence signals of the sediment sample. A factory spectrofluorometer coupled with an experimental fibre optic measurement system was used.
View Article and Find Full Text PDFMolecules
December 2024
College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
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