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结合城市空气质量常规监测数据、PM2.5化学成分数据和气象要素,分析了烟花爆竹燃放和扩散条件对郑州市春节空气质量的叠加影响。2015年郑州市未采取禁燃措施,造成持续14h以上的重度及严重污染,PM10、PM2.5和SO2浓度均急速增长,峰值浓度出现在初一凌晨1时左右,分别达到380μg/m3、271μg/m3、113μg/m3;NO2、CO和O3等气态污染物浓度响应不敏感;PM2.5中部分金属元素K、As、Ba、Cu、Pb、Sr和Cl元素浓度也受烟花爆竹影响,在春节也出现了当月的峰值浓度。2016年春节开始实施禁燃规定后,PM2.5、PM10、SO2与PM2.5化学组分出现急速增长的特征消失,空气质量维持较好水平。
Combined with routine monitoring of urban air quality data, PM2.5 chemical composition data and meteorological elements, the impact of fireworks and fireworks proliferation and diffusion conditions on the air quality in Zhengzhou City during the Spring Festival superposition was analyzed. In 2015, Zhengzhou Municipality did not take any measures to ban fire, resulting in severe and severe pollution lasting more than 14 hours. The concentrations of PM10, PM2.5 and SO2 all increased rapidly. The peak concentration appeared at around 1:00 am of the first day, reaching 380 μg / m3 and 271 μg / m3, 113μg / m3. The concentrations of NO2, CO and O3 were insensitive to gaseous pollutants. The concentrations of K, As, Ba, Cu, Pb, Sr and Cl in some metallic elements in PM2.5 were also affected by fireworks and firecrackers. Spring Festival also appeared the peak concentration of the month. After the implementation of the Prohibition Regulations in the spring of 2016, the rapid growth of the chemical constituents of PM2.5, PM10, SO2 and PM2.5 disappeared, and the air quality maintained a good level.