| Issue |
E3S Web Conf.
Volume 715, 2026
2026 2nd International Conference on Eco-environmental Protection, Environmental Monitoring and Remediation (EPEMR 2026)
|
|
|---|---|---|
| Article Number | 01019 | |
| Number of page(s) | 4 | |
| Section | Environmental Monitoring, Assessment and Remediation | |
| DOI | https://doi.org/10.1051/e3sconf/202671501019 | |
| Published online | 03 June 2026 | |
Concentrations and Composition of Atmospheric Nitroaromatic Compounds over the Yellow Sea in Summer
College of Environmental Science an Engineering, Ocean University of China, Laoshan Campus, 238 Songling Road, Qingdao, Shandong, 266100, China
* Yuqi Guo: This email address is being protected from spambots. You need JavaScript enabled to view it.
Abstract
Five PM2.5 samples were collected over the Yellow Sea from July 13 to 17, 2024, and analyzed for 11 nitroaromatic compounds (NACs). The total NAC concentrations ranged from 0.18 to 1.54 ng/m³, with an average of 0.82 ng/m3. 5-Nitrosalicylic acid (5NSA), 4-nitrophenol (4NP), and 5-nitroguiacol (5NG) were the dominant species. Sample Q4 showed the highest concentration (1.54 ng/m3), while Q5 the lowest (0.18 ng/m3). Meteorological data indicated average temperature of 24.6°C, relative humidity of 90.0%, and wind speed of 7.7 m/s. High humidity and low wind speed favored the partitioning of NACs into the particle phase. This study provides the first baseline data on atmospheric NACs over the Yellow Sea in summer, offering insights into the sources and secondary formation of organic aerosols in this region.
© The Authors, published by EDP Sciences, 2026
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