摘要
利用宜兴市2025年春节期间(1月28日-2月4日)环境监测数据及PM_(2.5)组分监测数据,通过正定矩阵因子分解(PMF)及比值法来探究宜兴市春节期间烟花爆竹燃放对PM_(2.5)及其组分的影响。结果表明:烟花爆竹集中燃放时段PM_(2.5)、PM_(10)、NO_(2)、SO_(2)浓度迅速上升,均值浓度比非集中燃放时段分别上升92.95%、82.47%、16.76%、127.15%;硫酸根离子(SO_(4)^(2-))、钾离子(K^(+))、氯离子(Cl^(-))、镁离子(Mg^(2+))、有机碳(OC)、元素碳(EC)质量浓度显著增加,比非集中燃放时段分别升高1.7、5.3、5.4、4.6、1.7、2.0倍。PM_(2.5)源解析结果显示春节期间二次源(占比41.3%)依然是宜兴市PM_(2.5)主要污染来源,其次为烟花燃放源(占比21.0%)。烟花爆竹燃放对徐舍镇的贡献量和贡献率最大,分别为141.91µg/m^(3)、74.55%,而对城区的贡献率和贡献量均低于周边乡镇,城区管控效果明显,乡镇仍需进一步加强。
Environmental monitoring data and PM_(2.5) component monitoring data from Yixing City during Spring Festival period in 2025(January 28 to February 4)were utilized to investigate the impact of fireworks and firecracker combustion on PM_(2.5) and its components.The research employed positive matrix factorization(PMF)and ratio methods for analysis.Results indicated that during the concentrated fireworks and firecracker combustion periods,the concentrations of PM_(2.5),PM_(10),NO₂and SO₂increased rapidly,with average concentrations rising by 92.95%,82.47%,16.76%and 127.15%,respectively,compared to non-concentrated combustion periods.The mass concentrations of sulfate ions(SO_(4)^(2-)),potassium ions(K⁺),chloride ions(Cl⁻),magnesium ions(Mg^(2+)),organic carbon(OC)and elemental carbon(EC)also significantly increased,rising by 1.7,5.3,5.4,4.6,1.7 and 2.0 times,respectively,compared to non-concentrated combustion periods.Source apportionment of PM_(2.5) revealed that secondary sources(accounting for 41.3%)remained the primary pollution source of PM_(2.5) in Yixing city during Spring Festival,followed by fireworks and firecracker combustion sources(accounting for 21.0%).The contribution of fireworks and firecracker combustion was the highest in Xushe town,with a contribution amount of 141.91μg/m³and a contribution rate of 74.55%.In contrast,the contribution rate and amount in the urban area were lower than those in surrounding rural areas,indicating a significant control effect in the urban area,while rural areas still needed further strengthening of control measures.
作者
程文健
蒋科伟
许友静
夏伟林
余创
CHENG Wenjian;JIANG Kewei;XU Youjing;XIA Weilin;YU Chuang(Yixing Ecological Environment Bureau,Jiangsu Wuxi 214206;Lehe Technology(Hunan)Co.,Ltd.,Hunan Changsha 410205,China)
出处
《广州化工》
2025年第16期146-149,163,共5页
GuangZhou Chemical Industry
基金
宜兴市环境空气质量改善服务项目(宜政办文〔2022〕232号)。
关键词
PM_(2.5)及组分
烟花燃放
贡献
宜兴市
PM_(2.5)and its components
fireworks and firecrackers
contribution
yixing city
