Increased PM_2.5 Caused by Enhanced Fireworks Burning and Secondary Aerosols in a Forested City of North China During the 2023-2025 Spring Festivals.

ABSTRACT: Fireworks burning (FB) constitutes a major but short-lived source of PM_2.5 during the Chinese Spring Festival, significantly deteriorating air quality in certain regions. This study was conducted to evaluate its impact through real-time monitoring of PM_2.5 chemical compositions in a forestry city (Xinyang) during the pre-fireworks and fireworks periods at the Spring Festival of 2023-2025. During the fireworks period, PM_2.5 concentrations increased by 10.5-226.4% compared to pre-fireworks levels, of which the concentrations of secondary inorganic aerosols (SIA), K and Cl^- rose by 1.6-4.8, 1.9-14.7 and 1.5-8.1 times, and they accounted for 33.2-47.7%, 6.7-12.5% and 3.8-6.4% of PM_2.5, respectively. Correspondingly, PM_2.5/CO and

SUBMITTER: Ma Q 

PROVIDER: S-EPMC12736846 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature