|ZHAO Xu-hui, WANG Han-yue, ZHANG Fu-hai， ZHU Yu.Research on the Impact of Fireworks on Ambient Air Quality in Anhui During the Spring Festival[J].Environmental Monitoring and Forewarning,2022,14(6):22-31
|关键词: 春节 烟花爆竹 环境空气 颗粒物 贡献率 安徽省
|Research on the Impact of Fireworks on Ambient Air Quality in Anhui During the Spring Festival
ZHAO Xu-hui, WANG Han-yue, ZHANG Fu-hai， ZHU Yu
Anhui Ecoenvironmental Monitoring Centre, Hefei,Anhui 230071,China
|The impacts of fireworks on ambient air quality in the Yangtze Huaihe region was investigated in this study, based on air quality parameters near the ground, particulate matter component and lidar data, this paper systematically analyzed the impacts of fireworks on the ambient air quality of major cities and counties in Anhui Province during the Spring Festival in 2022. The study found that the ambient air quality in Anhui Province during the Spring Festival in 2022 was better than the average level from 〖JP+1〗2019 to 2021 significantly. However, the influence of superposition of local fireworks and adverse meteorological conditions (low temperature, low wind speed, high humidity and static stability), and the environmental impact (particulate matter concentration had high peak value and wide reach) was still serious. The proportion of water soluble ions such as NO-3, SO2-4 and NH+4 in atmospheric particulate matter components in key regions (Hefei and Huaibei) decreased (with the decrease ranged from 3.4% to 12.1%). And the trace components (K+, Cl-, metal elements, etc.) of fireworks had an obvious process of peak concentration increasing dramatically, and the increase of metal element concentration were significantly higher than that of water soluble ions. The fireworks lighting had significant impact on the process of the vertical distribution, transmission and deposition of particulate matter, and the morphology were mainly spherical fine particulate matters. And the main reason for the significant deterioration of air quality in the main urban area was the superimposed emission of local fireworks and the impact of surrounding pollution transmission under adverse meteorological conditions. The estimation results by quantitative method of ratio of PM2.5 to CO showed that the impacts of fireworks on PM2.5 concentration in urban construction areas of the whole province ranged from 4 to 701 μg/m3, and the average was 159 μg/m3. The contribution amount and contribution rate of fireworks to PM2.5 concentration showed the distribution characteristics that the Central part of Anhui was larger than the Northern part of Anhui which was larger than the Southern part of Anhui. It indicated that measures of banning the setting off fireworks in the main urban area had played a key role in improving air quality, and it was necessary to strengthen the control measures for setting off fireworks in the surrounding areas of the city.
|Key words: Spring Festival Firework Ambient air Particulate matter Contribution rate Anhui Province