Issue |
E3S Web Conf.
Volume 628, 2025
2025 7th International Conference on Environmental Prevention and Pollution Control Technologies (EPPCT 2025)
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Article Number | 01021 | |
Number of page(s) | 5 | |
Section | Research on the Characterization and Remediation Technologies of Environmental Pollutants | |
DOI | https://doi.org/10.1051/e3sconf/202562801021 | |
Published online | 16 May 2025 |
Toxic effects of complex mixed organic compounds in aerosols on Skeletonema costatum
Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Environment and Ecology, Ministry of Education of China, Ocean University of China,
Qingdao, China
* Corresponding author: 21221013049@stu.ouc.edu.cn
Considering the complexity of organic components in aerosols, this study aimed to compare the toxic effects of mixed PAHs and the highly toxic benzo[a]pyrene on Skeletonema costatum (S. costatum). To achieve this, weakly polar organic compounds containing PAHs (TSP-PAHs) were extracted from winter aerosols collected in Qingdao, China. The study then assessed and compared the toxicity of TSP-PAHs (the exposure concentrations were set at 0.15 - 1 μg/L) and a single PAH (1 μg/L benzo[a]pyrene) on S. costatum. Results showed that both TSP-PAHs and benzo[a]pyrene inhibited S. costatum growth, with TSP-PAHs exhibiting a stronger dose-dependent inhibitory effect. On the fourth day, growth inhibition in TSP-PAHs groups ranged from 58.8% to 96%, while benzo[a]pyrene caused only 15% inhibition. This suggests that mixed PAHs impose greater toxicity than a single PAH, likely due to synergistic effects and oxidative stress mechanisms.
© The Authors, published by EDP Sciences, 2025
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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