烟花爆竹燃放对四川盆地边缘城市环境空气的影响及其污染传输特征研究

为了解四川盆地边缘城市环境空气质量受烟花爆竹燃放影响的特征，选取位于成都平原西南部的乐山市进行研究。研究发现，春节期间乐山市受烟花爆竹燃放影响的环境空气中的颗粒物及其组分的浓度变化趋势一致。相关性分析结果显示：在除夕夜烟花爆竹燃放影响时间段内，乐山市环境空气中的颗粒物(PM₁₀、PM_2.5)浓度与SO₄^2-、F^-、Al、K、Mn、Cu、Zn等组分浓度呈显著正相关，Pearson相关系数达到了0.48～0.73;Al、Si、K、Mn、Cu、Zn等组分浓度之间也表现出显著正相关，Pearson相关系数高达0.78～0.98。其中，K⁺浓度占比从0%上升到7.32%,SO₄^2-浓度占比从18.94%上升到24.73%,Cl^-浓度占比从0.46%上升到4.29%,Cu元素浓度占比从0.05%上升到0.30%,Al元素浓度占比从5.87%上升到7.46%。除夕夜烟花爆竹燃放影响期间，乐山市中部和北部区...

Effects of Fireworks Discharge on Ambient Air and Pollution Transmission Characteristics in Marginal Cities of Sichuan Basin

In order to understand the characteristics of ambient air quality affected by fireworks discharge in cities on the edge of Sichuan Basin,Leshan City,located in the southwest of Chengdu Plain,was selected for the study.It was found that the concentration of particulate matter and its components in ambient air had the same trend.The results of correlation analysis showed that the concentration of particulate matter (PM₁₀,PM_2.5) in the ambient air of Leshan City was significantly positively correlated with the concentration of SO^2-₄,F^-,Al,K,Mn,Cu,Zn and other components during the influence period of fireworks discharge on New Year''s Eve,and the Pearson correlation coefficient reached 0.48 to 0.73.The concentration of Al,Si,K,Mn,Cu and Zn also showed significant positive correlation,and the Pearson correlation coefficient was as high as 0.78-0.98.The proportion of K⁺ concentration increased from 0% to 7.32%;The proportion of SO^2-₄ concentration increased from 18.94% to 24.73%;The proportion of Cl^- concentration increased from 0.46% to 4.29%.In addition,the proportion of metal element Cu increased from 0.05% to 0.30%.The proportion of Al concentration increased from 5.87% to 7.46%.During the influence period of fireworks setting off on New Year''s Eve,the heavy pollution in the central and northern regions of Leshan City was closely related to the vortex circulation formed by the interaction of the Dadu River Gorger airflow in the southeast,northeast,northwest,south and soutwest.