摘要
以太原市为研究对象,通过对2013—2017年太原市空气质量各数据分析,探讨了太原市首要污染物排放特征、太原市颗粒物污染特征、PM2.5和其他空气污染物的相关性、PM2.5浓度和PM10浓度随湿度及风速的变化。结果显示,太原市污染物排放呈现颗粒物特征,颗粒物浓度呈现显著的季节特征,尤其是PM2.5重污染天数占颗粒物污染天数的比例达到94.3%,而且2013—2017年间PM2.5污染物浓度降幅较PM10缓慢,这其中除了风速、湿度等气象因素的影响外,也与太原市产业结构不合理的历史原因有关,更与NO2、SO2、CO、O3污染物之间的排放浓度的此消彼长有一定的联系。研究表明,2013—2017年太原市冬季防控有一定的效果,本地排放对大气污染的贡献值比较大,本研究可为太原市冬季污染防控提供一定的借鉴。
Taking Taiyuan City as the research object,through the analysis of the air quality data of Taiyuan City from 2013 to 2017,this paper discusses the primary pollutant emission characteristics of Taiyuan City,the pollution characteristics of particulate matter in Taiyuan City,the correlation of PM2.5 and other air pollutants,change of PM2.5 and PM10 concentration with humidity and wind speed.The results show that the pollutant discharge in Taiyuan City is characterized by particulate matter,and the concentration of particulate matter shows significant seasonal characteristics.In particular,the proportion of PM2.5 heavy pollution days in particulate matter pollution days reached 94.3%,and the concentration of pollutants decreased more slowly from 2013 to 2017 compared with PM10.Among them,in addition to the influence of meteorological factors such as wind speed and humidity,it is also related to the historical reason of unreasonable industrial structure in Taiyuan,and to the fluctuation of emission concentration between NO2,SO2,CO and O3 pollutants.The research shows that the winter prevention and control of Taiyuan City has certain effects in 2013—2017,and the contribution of local emissions to air pollution is relatively large.This study can provide some reference for winter pollution prevention and control in Taiyuan City.
出处
《山西科技》
2019年第6期105-108,112,共5页
Shanxi Science and Technology
